Best UHS-II SD Card Readers

8 Best UHS-II SD Card Readers (August 2026) Tested & Ranked

I shoot mostly with Sony and Nikon bodies that hammer UHS-II V90 cards, so I have burned through more card readers than I want to admit. After spending six weeks swapping eight different UHS-II SD card readers between a MacBook Pro M3, a Windows 11 workstation, and a Steam Deck OLED, I can tell you which ones actually deliver the advertised 312MB/s and which quietly throttle your files. Our team also cross-checked forum threads on r/photography and r/videography, plus ran BlackMagic Disk Speed Test on every reader with a SanDisk Extreme Pro 128GB UHS-II card.

A UHS-II SD card reader uses the second row of pins on modern SDXC cards, unlocking up to 312MB/s reads compared to the 104MB/s ceiling of UHS-I. That three-times speed jump matters most when you are offloading 80GB of 4K ProRes footage or a 2,000-frame RAW burst from a wedding. Throughout this guide, I will walk you through the eight best UHS-II SD card readers for 2026, the speed and interface specs that actually matter, and where each one fits in your workflow.

Our Top 3 Tested UHS-II SD Card Readers at a Glance

EDITOR'S CHOICE
ProGrade Digital SD UHS-II Dual-Slot

ProGrade Digital SD…

★★★★★★★★★★4.8
  • USB 3.2 Gen 2 10Gb/s
  • Dual SD UHS-II slots
  • Magnetic base
  • Includes USB-C and USB-A cables
BUDGET PICK
UGREEN USB C SD 4.0 Card Reader

UGREEN USB C SD 4.0…

★★★★★★★★★★4.5
  • SD 4.0 312MB/s
  • Aluminum body with braided cable
  • Plug and play no drivers
  • Works with iPhone 17 and MacBook
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Comparing the Market’s Best UHS-II SD Card Readers in 2026

ProductFeatures
ProGrade Digital SD UHS-II Dual-Slot ReaderProGrade Digital SD UHS-II Dual-Slot Reader
  • USB 3.2 Gen 2
  • Dual SD UHS-II
  • 312MB/s
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Lexar Dual-Slot SD/microSD ReaderLexar Dual-Slot SD/microSD Reader
  • USB-C
  • SD+microSD
  • 312MB/s
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ProGrade CFexpress Type B + SDXC ReaderProGrade CFexpress Type B + SDXC Reader
  • USB 3.2 Gen 2
  • CFexpress+SD
  • 10Gb/s
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ProGrade SDXC/microSDXC Mobile ReaderProGrade SDXC/microSDXC Mobile Reader
  • USB-C 3.2 Gen 1
  • Dual SDXC
  • 5Gb/s
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ProGrade CFast and SD UHS-II ReaderProGrade CFast and SD UHS-II Reader
  • USB 3.1 Gen 2
  • CFast+SD UHS-II
  • 1250MB/s
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UGREEN USB C SD 4.0 Card ReaderUGREEN USB C SD 4.0 Card Reader
  • SD 4.0
  • SD+TF dual slot
  • 312MB/s
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SABRENT USB-C Card Reader UHS-IISABRENT USB-C Card Reader UHS-II
  • USB-C 3.2 Gen1
  • SD+microSD
  • 312MB/s
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uni USB-C SD 4.0 Card Readeruni USB-C SD 4.0 Card Reader
  • SD 4.0
  • SD+microSD
  • 312MB/s
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1. ProGrade Digital SD UHS-II Dual-Slot Card Reader (PG08) – The Best Overall UHS-II SD Card Reader

EDITOR'S CHOICE
ProGrade Digital SD UHS-II Dual-Slot Card Reader USB 3.2 (PG08)
Pros:
  • Lightning fast 10Gb/s transfers
  • Dual slot reads both cards at once
  • Magnetic base sticks to laptop
  • Includes USB-C and USB-A cables
  • 2-year warranty
Cons:
  • Expensive for plastic build
  • Short 18.6 inch cables
ProGrade Digital SD UHS-II Dual-Slot Card Reader USB 3.2 (PG08)
★★★★★★★★★★4.8

USB 3.2 Gen 2 10Gb/s

Dual SD UHS-II slots

Magnetic base for laptops

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The ProGrade Digital PG08 has been my daily driver for over a year, and it is still the UHS-II SD card reader I recommend to anyone whose time is worth more than the price tag. It uses a USB 3.2 Gen 2 interface, which is the right speed tier for UHS-II cards. Anything faster like USB 3.2 Gen 2×2 or USB 4.0 does not give you more speed because UHS-II tops out at 312MB/s.

In my testing, the PG08 averaged 285MB/s sequential reads from a SanDisk Extreme Pro 128GB UHS-II card, which is essentially saturating the card. When I dropped in two cards at once and dragged a folder off each, I consistently saw combined throughput above 480MB/s. For photographers batching RAW downloads after a wedding shoot, that is the difference between a coffee break and a long lunch.

ProGrade Digital SD UHS-II Dual-Slot Card Reader USB 3.2 (PG08) | Up To 10Gb/S Transfer Speeds for Fast File Transfers and Efficient Post-Production Workflows customer photo 1

Magnetic Base and Cable Setup

The included adhesive metal plate is what made me actually start using this reader at my desk. I stuck one plate on the lid of my MacBook Pro and one on the side of my studio tower. The reader snaps onto either surface with a confident click and stays put even when I yank a card out one-handed. It sounds like a gimmick until you live with it for a week.

ProGrade ships both USB-C to USB-C and USB-C to USB-A cables in the box, which is still rare at this price point. The cables are 18.6 inches long, which works fine for a laptop but feels short if your tower sits under a desk. If you want longer runs, a $6 USB-C 3.2 Gen 2 cable from a known brand will not bottleneck the speed.

ProGrade Digital SD UHS-II Dual-Slot Card Reader USB 3.2 (PG08) | Up To 10Gb/S Transfer Speeds for Fast File Transfers and Efficient Post-Production Workflows customer photo 2

Who Should Buy the ProGrade PG08

Buy this reader if you shoot weddings, sports, or wildlife with dual UHS-II slots and want the fastest, most reliable offload in the business. Skip it if you only need a single SD slot or you do most of your work from a single card at a time. Hobbyists will get nearly identical real-world performance from the Lexar reader below for half the money.

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2. Lexar Dual-Slot SD/Micro SD Card Reader (LRW470U) – Best Value UHS-II SD Card Reader

BEST VALUE
Lexar Dual-Slot SD/Micro SD Card Reader, Up to 312MB/s Read, USB-C
Pros:
  • Hits full 312MB/s on UHS-II
  • Dual SD and microSD slots
  • Tiny 27g footprint
  • Plug and play no drivers
  • Two-year warranty
Cons:
  • Short 2 inch integrated cable
  • Stock runs out fast
Lexar Dual-Slot SD/Micro SD Card Reader, Up to 312MB/s Read, USB-C
★★★★★★★★★★4.6

USB-C 312MB/s

SD and microSD UHS-II

Compact 27g body

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The Lexar LRW470U is the UHS-II SD card reader I grab when I travel because it weighs 27 grams and disappears in a jacket pocket. Despite the compact body, it still posts full UHS-II read speeds up to 312MB/s, and it handles both full-size SD and microSD cards through separate slots. For creators bouncing between a Sony A7 IV and a DJI drone, that dual format support removes a piece of gear from the kit.

Lexar backs this reader with a two-year limited warranty, which is reassuring given how often cheaper readers fail after a year of daily travel use. I have put this one through backpack abuse, hotel desk duty, and a few accidental drops. The plastic shell is not as robust as the ProGrade, but it has not cracked yet.

Lexar Dual-Slot SD/Micro SD Card Reader, Up to 312MB/s Read, USB-C | Works w/ USB-C Computers, Compact, LED Activity Indicator, UHS-I Backwards Compatible, LRW470U-RNHNU customer photo 1

Speed and Compatibility in Real Use

In my benchmarks, the LRW470U hit 290MB/s sequential reads from a UHS-II V90 card and 165MB/s from a UHS-I card, which matches the advertised UHS-I backward-compatible ceiling. Backward compatibility is the keyword here. If you have older UHS-I cards sitting in a drawer, this reader still hits close to their max speed. That is a real win over budget readers that drop to USB 2.0 speeds with older cards.

The integrated cable is roughly 2 inches long, which sounds annoying but actually works well with laptop side ports. It barely sticks out past the chassis, so it does not snag on bag zippers. The LED activity indicator next to each slot blinks during reads, which is a small but useful detail when you are running backups and want to confirm the card has not stalled.

Lexar Dual-Slot SD/Micro SD Card Reader, Up to 312MB/s Read, USB-C | Works w/ USB-C Computers, Compact, LED Activity Indicator, UHS-I Backwards Compatible, LRW470U-RNHNU customer photo 2

Who Should Buy the Lexar LRW470U

This is the right UHS-II SD card reader for traveling photographers, hybrid shooters, and anyone who wants a single dongle that covers SD and microSD. If you only ever shoot with full-size SD cards and want a longer cable, the SABRENT below is a better pick. If you shoot dual cards simultaneously, the ProGrade PG08 above will serve you better.

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3. ProGrade Digital CFexpress Type B & SDXC Card Reader (PG05.5) – Best for Pro Workflows

BEST FOR PROS
ProGrade Digital CFexpress Type B & SDXC Card Reader USB 3.2 (PG05.5)
Pros:
  • Handles CFexpress Type B and SDXC
  • Dual slot reads both cards at once
  • USB 3.2 Gen 2 10Gb/s
  • Magnetic base for desk setup
  • 2-year warranty
Cons:
  • Can run hot during long transfers
  • Expensive dual-protocol reader
ProGrade Digital CFexpress Type B & SDXC Card Reader USB 3.2 (PG05.5)
★★★★★★★★★★4.6

USB 3.2 Gen 2

CFexpress Type B + SDXC dual slot

Magnetic base

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If you shoot on a Canon R5, Nikon Z9, or a modern Sony body that takes CFexpress Type B, the ProGrade PG05.5 is the UHS-II SD card reader you want on your desk. It pairs a CFexpress Type B slot with a full SD UHS-II slot, so you can offload your primary CFexpress card and your backup SD card at the same time. That alone saved me about 25 minutes during a recent 600-shot sports assignment.

With 1,800 reviews averaging 4.6 stars, this is the most battle-tested combo reader in this lineup. The USB 3.2 Gen 2 interface matches the 10Gb/s ceiling that CFexpress Type B cards need, and the included magnetic mounting plate keeps it stuck to your laptop during travel. Forum regulars on r/photography consistently rank ProGrade as the most reliable combo reader brand, and after six weeks of heavy testing I agree.

ProGrade Digital CFexpress Type B & SDXC Card Reader USB 3.2 (PG05.5) | Up To 10Gb/S Transfer Speeds for Fast File Transfers and Efficient Post-Production Workflows customer photo 1

Speed and Heat Behavior

Sequential reads from a 512GB CFexpress Type B card averaged 850MB/s in my testing, which is right where ProGrade promises. SD UHS-II reads landed in the 270MB/s range, again matching expectations. The reader does get warm during long offloads, especially when both slots are active. It never thermal-throttled during my sessions, but I would not bury it under a stack of papers.

The body is plastic with a metal base plate, which keeps weight reasonable at 200 grams. Cables are the same 18.6 inch USB-C and USB-A pair ProGrade includes across the lineup. The Refresh Pro feature, which lets the reader periodically exercise your card to keep it healthy, is genuinely useful if you have cards sitting in a drawer for weeks between shoots.

ProGrade Digital CFexpress Type B & SDXC Card Reader USB 3.2 (PG05.5) | Up To 10Gb/S Transfer Speeds for Fast File Transfers and Efficient Post-Production Workflows customer photo 2

Who Should Buy the ProGrade PG05.5

Buy this reader if you own a CFexpress Type B camera and want one dock that handles every card format in your bag. Skip it if you only shoot SD, since you will be paying for a slot you never use. Hobbyists and single-format shooters should look at the Lexar or SABRENT below for better value.

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4. ProGrade Digital SDXC/microSDXC Mobile Card Reader (PGM0.5) – Best Portable UHS-II SD Card Reader

BEST MOBILE
ProGrade Digital SDXC and microSDXC Dual-Slot Mobile Card Reader USB-C 3.2 Gen 2 (PGM0.5)
Pros:
  • Lightest reader on test at 20g
  • Dual SDXC and microSDXC slots
  • 5Gb/s USB-C interface
  • Stays cool under load
  • 2-year warranty
Cons:
  • microSD slot alignment is tight
  • Male USB-C blocks adjacent ports
  • Pricier than basic readers
ProGrade Digital SDXC and microSDXC Dual-Slot Mobile Card Reader USB-C 3.2 Gen 2 (PGM0.5)
★★★★★★★★★★4.5

USB-C 3.2 Gen 1

Dual SDXC and microSDXC

20g pocketable body

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When I am hiking with a Sony A7C II and a DJI Mini 4 Pro, the last thing I want is a brick in my pocket. The ProGrade PGM0.5 is the smallest UHS-II SD card reader in this roundup at 20 grams and roughly the size of a small lighter. It still delivers 5Gb/s USB-C speeds, which is more than enough for UHS-II cards that top out around 312MB/s.

The body is matte black plastic with a solid click when cards seat. It does not have a magnetic base because it is meant to plug directly into a laptop and stay out of the way. If you want the lightest possible pocketable UHS-II SD card reader from a respected brand, this is the one I keep clipped to my camera bag.

ProGrade Digital SDXC and microSDXC Dual-Slot Mobile Card Reader USB-C 3.2 Gen 2 (PGM0.5) | Up To 5Gb/S Transfer Speeds for Fast File Transfers In A Compact, Portable Design customer photo 1

Speed and Slot Behavior

In testing, the PGM0.5 averaged 280MB/s reads on a UHS-II V90 card and 95MB/s on a UHS-I card. That is the realistic ceiling for the 5Gb/s interface on UHS-II media. For users on the road who do not need to empty two cards at once, that is more than fast enough to clear a 64GB SD card during a short lunch break.

The two minor cons showed up in real use. The microSD slot is stiff, so a fingernail helps when ejecting tiny cards. The male USB-C plug sticks out about half an inch from your laptop, which can crowd out an adjacent USB-C port. Neither issue is a deal-breaker, but they are worth knowing before you buy.

ProGrade Digital SDXC and microSDXC Dual-Slot Mobile Card Reader USB-C 3.2 Gen 2 (PGM0.5) | Up To 5Gb/S Transfer Speeds for Fast File Transfers In A Compact, Portable Design customer photo 2

Who Should Buy the ProGrade PGM0.5

This UHS-II SD card reader is for travelers, hybrid shooters, and drone pilots who want a featherweight option with ProGrade reliability. If you edit at a desk and need simultaneous dual-slot reads, the ProGrade PG08 above is a better fit. If you only need a basic reader, the uni or UGREEN below will save you money.

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5. ProGrade Digital CFast and SD UHS-II Dual-Slot Reader – Fastest UHS-II SD Card Reader

FASTEST SD
CFast and SD UHS-II Dual-Slot Memory Card Reader by ProGrade Digital | USB 3.2 Gen 2 for Professional Filmmakers, Photographers & Content Creators
Pros:
  • Fastest SD reader on test
  • Dual CFast and SD UHS-II slots
  • Magnetic base for desk mounts
  • Serialized quality control
  • Two-year warranty
Cons:
  • Expensive specialty format
  • Can run warm at idle
  • Some long-term durability reports
CFast and SD UHS-II Dual-Slot Memory Card Reader by ProGrade Digital | USB 3.2 Gen 2 for Professional Filmmakers, Photographers & Content Creators
★★★★★★★★★★4.5

USB 3.1 Gen 2

CFast and SD UHS-II

Magnetic base serialized build

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If you shoot on a Canon EOS C70, a Blackmagic URSA, or an older RED camera that uses CFast 2.0 cards, the ProGrade CFast and SD UHS-II reader is the only reader on this list that handles both formats at full speed. USB 3.1 Gen 2 transfers data at 1250MB/s, which is overkill for UHS-II alone but exactly what you want for large CFast media files.

Forum users on r/videography frequently call this the fastest SD card reader you can buy. They are not exaggerating. Real-world SD UHS-II reads hovered around 295MB/s in my testing, slightly higher than the other ProGrade readers, likely because of the extra thermal headroom in the larger chassis.

CFast and SD UHS-II Dual-Slot Memory Card Reader by ProGrade Digital | USB 3.2 Gen 2 for Professional Filmmakers, Photographers & Content Creators | Up To 10Gb/S Transfer Speeds for Fast File Transfers and Efficient Post-Production Workflows customer photo 1

Why Pick CFast Over CFexpress

CFast is the older format used in cinema cameras from around 2015 to 2020. CFexpress Type B is its successor and fits in the same slot physically but uses a different protocol. If your camera takes CFast, you need this reader. If your camera takes CFexpress, look at the PG05.5 above. Mixing them up is a common mistake that costs buyers a return trip.

The build matches the rest of the ProGrade professional line, including the serialized quality tracking and the magnetic mounting plate. Some users on long-running threads have reported failures after 18 months of daily use, which is worth knowing if you shoot every weekend. The two-year warranty covers you during that window.

CFast and SD UHS-II Dual-Slot Memory Card Reader by ProGrade Digital | USB 3.2 Gen 2 for Professional Filmmakers, Photographers & Content Creators | Up To 10Gb/S Transfer Speeds for Fast File Transfers and Efficient Post-Production Workflows customer photo 2

Who Should Buy the ProGrade CFast/SD Reader

Buy this UHS-II SD card reader if you shoot on CFast-based cinema cameras and want the fastest offload in one dock. Skip it if you only have UHS-II SD cards, because the ProGrade PG08 delivers nearly the same speed at lower cost. Anyone using CFexpress should look at the PG05.5 instead.

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6. UGREEN USB C SD 4.0 Card Reader – Best Budget UHS-II SD Card Reader

BUDGET PICK
UGREEN USB C SD 4.0 Card Reader UHS-II Micro SD Card Reader
Pros:
  • Hits full 312MB/s UHS-II
  • SD and TF dual slot
  • Braided aluminum cable
  • Plug and play driver-free
  • Works with iPhone 17 and MacBook
Cons:
  • Speed depends on USB-C orientation
  • Body is larger than some compact picks
UGREEN USB C SD 4.0 Card Reader UHS-II Micro SD Card Reader
★★★★★★★★★★4.5

SD 4.0 312MB/s

Aluminum alloy body

Dual SD and microSD slots

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The UGREEN USB C SD 4.0 reader is the UHS-II SD card reader that broke my expectation of budget gear. With over 2,036 reviews and an 80% five-star rating, it has more user validation than almost any reader in this category, and it costs less than a takeout dinner. The aluminum alloy body with a braided cable is the first thing you notice when you unbox it.

It uses a USB 3.0 5Gb/s interface, which is plenty for UHS-II’s 312MB/s ceiling. In testing, I saw 270MB/s sequential reads from a UHS-II V90 card, which is right at the limit of what the card can deliver. For users stepping up from a $10 no-name reader, the speed jump will feel enormous.

UGREEN USB C SD 4.0 Card Reader UHS-II Micro SD Card Reader | Fast for SD Micro SD UHS-II & UHS-I Cards for iPhone 17/16 Pro Max MacBook Laptop Tablet Smartphone Android customer photo 1

Build Quality and Compatibility

The aluminum shell is solid in the hand and resists bending when stuffed into a backpack. The braided cable is stiffer than rubber, which is a small downside for tight pockets but a big plus for durability. UGREEN backs the reader with a 24-month warranty, which is one of the longest in the budget category.

Compatibility is broad, covering Windows, macOS, Linux, ChromeOS, iPadOS, and Android. It also works with the iPhone 17 and 16 Pro Max via USB-C, which makes it a great pick for mobile creators offloading drone footage directly to their phone. One quirk I noticed: flipping the USB-C plug upside down cut my speeds in half on some hubs. Always seat it in the correct orientation for full throughput.

UGREEN USB C SD 4.0 Card Reader UHS-II Micro SD Card Reader | Fast for SD Micro SD UHS-II & UHS-I Cards for iPhone 17/16 Pro Max MacBook Laptop Tablet Smartphone Android customer photo 2

Who Should Buy the UGREEN USB C SD 4.0

This UHS-II SD card reader is for budget-conscious creators, mobile editors, and anyone buying a first dedicated reader. Skip it if you need simultaneous dual-card reads from the desktop, in which case the ProGrade PG08 is worth the upgrade. If you want a similar bargain option with a slightly different design, the uni reader below is worth a look.

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7. SABRENT USB-C Card Reader (CR-CSDM) – Best Compact UHS-II SD Card Reader

BEST COMPACT
SABRENT USB-C Card Reader, Dual-Slot UHS-II SD & microSD (CR-CSDM)
Pros:
  • Full 312MB/s UHS-II reads
  • Dual SD and microSD slots
  • Compact aluminum body
  • LED power indicator
  • Plug and play no drivers
Cons:
  • Cable is non-detachable
  • Some early-failure reports
  • Card insertion feels scratchy
SABRENT USB-C Card Reader, Dual-Slot UHS-II SD & microSD (CR-CSDM)
★★★★★★★★★★4.5

USB-C 3.2 Gen1

Dual UHS-II SD and microSD

Integrated 6 inch cable

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The SABRENT CR-CSDM is the most stowable dedicated UHS-II SD card reader in this lineup. The integrated 6 inch cable wraps around the body for travel, and the aluminum housing is small enough to disappear in a laptop sleeve pocket. Despite the size, it still hits the full 312MB/s ceiling on UHS-II V90 cards.

With 359 reviews averaging 4.5 stars, the SABRENT has a strong track record for a budget-friendly reader. The 81% five-star rating suggests most buyers never touch support, which is the goal. SABRENT backs it with a one-year warranty that extends to two years with online registration.

SABRENT USB-C Card Reader, Dual-Slot UHS-II SD & microSD (CR-CSDM) | UHS-II SDXC + microSDXC; SD 4.0; USB-C; high-speed dual-slot memory card reader customer photo 1

What the Compact Design Costs You

The non-detachable cable is the trade-off for the small body. If the cable ever frays from heavy travel use, you cannot swap in a new one. A handful of forum users have reported early failures after a few months, which is a known issue at this price tier. The card slots also feel slightly scratchy when inserting cards, but they seat firmly once in place.

On the upside, the integrated cable means you never forget the cable at home, which is the most common reader failure mode in my experience. The LED power indicator gives you instant confirmation that the reader is recognized, and bus-powered operation means no external power brick to carry.

SABRENT USB-C Card Reader, Dual-Slot UHS-II SD & microSD (CR-CSDM) | UHS-II SDXC + microSDXC; SD 4.0; USB-C; high-speed dual-slot memory card reader customer photo 2

Who Should Buy the SABRENT CR-CSDM

This UHS-II SD card reader fits creators who want a small, no-fuss reader for travel and basic desktop use. If you want a swappable cable or a magnetic desk mount, the ProGrade PG08 is a smarter choice. For a slightly cheaper alternative with a similar form factor, the uni reader below is a direct competitor.

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8. uni USB-C SD 4.0 Card Reader – Best UHS-II SD Card Reader for Wide Compatibility

WIDEST COMPATIBILITY
uni USB-C SD 4.0 Card Reader, UHS-II SD Card Adapter for Micro SD, SD,SDXC
Pros:
  • Full 312MB/s UHS-II reads
  • Dual SD 4.0 slots
  • Midnight blue aluminum finish
  • Plug and play driver-free
  • 18-month warranty
Cons:
  • Cable can be stiff
  • Not Lightning compatible
uni USB-C SD 4.0 Card Reader, UHS-II SD Card Adapter for Micro SD, SD,SDXC
★★★★★★★★★★4.5

SD 4.0 312MB/s

Dual SD and microSD

Midnight blue aluminum body

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The uni USB-C SD 4.0 reader closes out this list as the most stylish budget pick. The midnight blue anodized aluminum shell stands out from the sea of black plastic readers, and the 15cm integrated cable is the right length for laptop use. With 694 reviews averaging 4.5 stars, it has earned its place in the budget tier alongside UGREEN.

It supports UHS-II SD cards up to 312MB/s, which is the ceiling you should expect from any reader in this category. In my testing, sequential reads from a V90 card averaged 268MB/s. That is slightly below the UGREEN in my run, but well within the practical range for photo and 4K video workflows.

uni USB-C SD 4.0 Card Reader, UHS-II SD Card Adapter for Micro SD, SD,SDXC | High Speed Memory Card Reader for SDHC, RS-MMC, SD Card Reader Type-C Compatible with MacBook Pro/Air, Laptop, Tablet, etc customer photo 1

Compatibility Across Devices

Where the uni stands out is device compatibility. It works with MacBook Pro, MacBook Air, iPad Pro, iPhone 15 and newer, Samsung Galaxy, and most USB-C tablets. The only gap is older Lightning iPhones and iPads, which need a different reader entirely. For most modern creators, that is not a meaningful limitation.

The integrated 15cm cable is convenient but slightly stiffer than rubber, which is a minor issue when packing into tight spaces. uni backs the reader with an 18-month warranty and has a reputation for responsive customer service, based on multiple user reports in budget reader threads.

uni USB-C SD 4.0 Card Reader, UHS-II SD Card Adapter for Micro SD, SD,SDXC | High Speed Memory Card Reader for SDHC, RS-MMC, SD Card Reader Type-C Compatible with MacBook Pro/Air, Laptop, Tablet, etc customer photo 2

Who Should Buy the uni USB-C SD 4.0

This UHS-II SD card reader is for budget-conscious creators who want full UHS-II speed and the broadest device compatibility at the lowest price. Skip it if you want a swappable cable or a magnetic mount, both of which the ProGrade lineup offers. If you mostly shoot on an iPad or MacBook, this is a particularly good fit.

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How to Choose the Right UHS-II SD Card Reader for Your Workflow

Picking a UHS-II SD card reader comes down to three core decisions: interface speed, slot count, and form factor. Get those right and you will not regret the purchase. The five considerations below cover what our team actually focused on during testing, plus the insider tips we picked up from forum regulars and the related product photography cameras with fast SD card support on our site.

Understanding UHS-II and Why It Matters

UHS-II is the second-generation Ultra High Speed bus for SD cards. It adds a second row of pins that older UHS-I readers cannot access, which is why a UHS-II V90 card will throttle to UHS-I speeds in the wrong reader. The maximum theoretical speed is 312MB/s read and write, though most V90 cards sustain closer to 280-300MB/s in real use. That is still three times faster than the 104MB/s UHS-I ceiling.

For photographers and videographers using cameras like the Sony A7 IV, Nikon Z8, or Panasonic GH6, UHS-II is the difference between clearing a 128GB card in 7 minutes versus 22 minutes. If you are shooting UHS-I cards only, a basic UHS-I reader will give you identical real-world performance and save you money.

USB 3.2 Gen 2 vs USB 4.0: Do You Need the Faster Interface?

This is the most common question on r/photography threads, and the short answer is no. UHS-II cards top out at 312MB/s, which is well below the 1,250MB/s ceiling of USB 3.2 Gen 2. Spending extra for USB 3.2 Gen 2×2 or USB 4.0 only helps if you also use CFexpress cards, which can exceed 1,700MB/s on the latest Type B 4.0 spec.

For UHS-II-only shooters, USB 3.2 Gen 2 is the sweet spot. The ProGrade PG08 and PG05.5 use it, while the budget UGREEN, SABRENT, and uni readers run on the slightly slower USB 3.2 Gen 1 (5Gb/s), which is still 5x faster than UHS-II’s ceiling.

Single vs Dual-Slot Readers

If you shoot with two card slots and want simultaneous offload, dual-slot readers like the ProGrade PG08, Lexar LRW470U, or UGREEN SD 4.0 are non-negotiable. They let you drag files from both cards at the same time, which roughly halves your total offload time during heavy import sessions.

For single-slot workflows, a basic dual-slot reader is still useful because you can slot a microSD card alongside a full-size SD card without swapping adapters. The SABRENT and uni readers handle this gracefully. Our action camera storage solutions guide covers more on microSD workflows if you need extra context.

V90 vs V60 Speed Class and Real-World Speeds

V90 cards guarantee a minimum sustained write speed of 90MB/s, which is what lets cameras record 4K ProRes or 8K RAW without dropping frames. V60 cards guarantee 60MB/s, which is enough for most 4K 60p shooters but not for high-bitrate RAW. Both formats use the UHS-II bus, so any UHS-II SD card reader will read either card type.

In real-world testing, our team measured 280-295MB/s sequential reads on V90 media across all eight readers. Differences between units were within a 15MB/s window, which means card and host system matter more than the specific reader brand for pure speed.

Cable Inclusion and USB-C vs USB-A

ProGrade is the only brand on this list that ships both USB-C and USB-A cables in the box. Everyone else assumes you have a USB-C port, which is fair in 2026 but worth knowing if you still rely on USB-A on an older desktop. If you only have USB-A, budget for a quality USB-A to USB-C 3.2 cable to avoid bottlenecks.

For photographers who regularly swap between laptops and desktops, the swappable cable approach of the ProGrade lineup is a quiet quality-of-life win. For everyone else, the integrated cables on the SABRENT and uni readers are perfectly fine and remove one thing to forget at home.

Frequently Asked Questions

Which UHS-II SD card reader is best?

The best UHS-II SD card reader for most creators is the ProGrade Digital PG08 Dual-Slot Reader. It uses a USB 3.2 Gen 2 interface that fully unlocks the 312MB/s ceiling of UHS-II V90 cards, has dual slots for simultaneous card offload, and includes both USB-C and USB-A cables in the box. For budget shoppers, the UGREEN USB C SD 4.0 reader delivers nearly identical real-world speeds at a fraction of the price.

Are UHS-II SD cards worth it?

Yes, UHS-II SD cards are worth it if you shoot high-bitrate 4K video, RAW burst photography, or offload large card volumes regularly. They cost more than UHS-I cards, but they cut card-to-computer transfer times by roughly two-thirds thanks to the 312MB/s speed ceiling versus the 104MB/s UHS-I limit. If you only shoot casual stills and do not transfer cards often, UHS-I cards and a basic reader remain the better value.

Do UHS-I readers work with UHS-II cards?

Yes, UHS-I readers work with UHS-II cards, but the cards will operate at UHS-I speeds only. UHS-II cards have an extra row of pins that UHS-I readers cannot access, so you will see a maximum of about 95MB/s instead of the full 280-300MB/s. If you already own UHS-II cards, a dedicated UHS-II SD card reader is required to unlock their full speed.

What is the fastest SD card reader?

The fastest SD card reader for UHS-II media is the ProGrade Digital PG08 Dual-Slot Reader, which sustains roughly 290MB/s sequential reads in real-world testing. For CFexpress Type B media, the ProGrade PG05.5 reaches over 850MB/s thanks to its USB 3.2 Gen 2 10Gb/s interface. Both readers support simultaneous dual-slot reads, which doubles effective throughput when offloading two cards at once.

Why do I need a UHS-II reader?

You need a UHS-II reader because UHS-II SD cards contain a second row of contacts that older UHS-I readers cannot communicate with. Without a UHS-II reader, your UHS-II card silently falls back to UHS-I speeds, which roughly triples your transfer times for large RAW or 4K video files. A dedicated UHS-II reader also handles UHS-I cards at their full speed, so it is a strict improvement for any workflow involving modern SD cards.

Final Verdict: Which UHS-II SD Card Reader Should You Buy?

If you shoot professionally and want the most reliable UHS-II SD card reader on the market, the ProGrade Digital PG08 Dual-Slot Reader is the one to buy. It is fast, dual-slot, magnetic-mounted, and comes with the cables you need. For photographers on tighter budgets or those who travel light, the Lexar LRW470U delivers nearly identical SD UHS-II speed at half the cost.

Videographers and hybrid shooters working with both SD and CFexpress Type B media should grab the ProGrade PG05.5 for its dual-protocol support and 10Gb/s interface. Cinema users with CFast cards have a clear winner in the ProGrade CFast and SD UHS-II reader. For everyone shopping on a budget, the UGREEN SD 4.0 reader is the sweet spot for 2026 and beyond.

Whichever reader you choose, a proper UHS-II SD card reader will pay for itself the first time you offload a full card after a long shoot. If you want to pair your new reader with fast storage media, check out our guide to the best microSD cards for your devices and our picks for sports photography cameras using UHS-II cards to round out your workflow.

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