Skip to main content
uni SD Card Reader, High-Speed USB 3.0 to Micro SD Card Adapter, Aluminum Computer Memory Card Reader Dual Slots, for SD/SDXC/SDHC/MMC/Micro SDXC/TF/Micro SDHC | Laptop, PC, and More
uni

uni SD Card Reader

Bottom line: The uni SD Card Reader ($9.49 on Amazon as of 2026-10-20 22:15 UTC): USB 3.0 at 5Gbps, backward compatible with USB 2.0 and 1.1; main trade-off: UHS-II cards run at UHS-I speeds, capping pro-video throughput.

$9.49

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

Buy on Amazon — $9.49 Compare to similar accessories

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ USB 3.0 at 5Gbps, backward compatible with USB 2.0 and 1.1
  • ✓ Dual slots read and write SD plus microSD simultaneously
  • ✓ Aluminum shell dissipates heat better than plastic readers
  • ✓ Supports cards up to 2TB, including SDXC and UHS-I

Cons

  • ✗ UHS-II cards run at UHS-I speeds, capping pro-video throughput
  • ✗ No CompactFlash, CFexpress, XQD or Memory Stick slot
  • ✗ USB-A only, so USB-C laptops need a separate adapter
  • ✗ Bus-powered design ties real throughput to your port and card

Manufacturer description

Two independent slots let you read a full-size SD card and a microSD card at the same time, so you can move footage from a camera card to a drone card without unplugging and re-inserting anything mid-session. That matters if you shoot on multiple bodies or juggle a mirrorless camera and a dash cam on the same edit day. The housing is aluminum rather than plastic, which helps dissipate heat during long transfers, and the braided nylon cable keeps the connector low-profile so it will not crowd neighboring USB ports on a thin laptop. Spring-loaded slots eject cards cleanly with a push. Format…

Related Products

Other products in this category you may like:

SpecPicks Verdict

SpecPicks scored uni SD Card Reader using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. uni's accessories lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for accessories of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

How fast is this card reader?

It uses a USB 3.0 interface rated at 5Gbps, and it is backward compatible with USB 2.0 and 1.1 ports. Real transfer speed is limited by whichever is slower: your card, your port, or the 5Gbps ceiling.

Can it read two cards at once?

Yes. The two slots operate independently, so you can read and write a full-size SD card and a microSD card at the same time without swapping cards between transfers.

What is the largest memory card it supports?

Up to 2TB. It handles SD, SDXC, SDHC, MMC, RS-MMC, micro SDXC, micro SD, micro SDHC and UHS-I cards.

Do I need to install drivers or plug in a power adapter?

No to both. It is driver-free plug and play on Windows, macOS, Chrome OS and Linux, and it is powered entirely by the USB port it is connected to.

What warranty comes with the uni card reader?

uni lists an 18-month warranty plus 24/7 customer support. Check the current product listing to confirm terms before you buy.

Key Features

  • [ULTRA FAST DATA TRANSFER] - USB 3.0 brings you fast and reliable 5Gbps photo, video transfer from camera to laptop, reducing transfer time and improving your work efficiency. Backward compatible with USB 2.0 & 1.1.
  • [READ & WRITE SIMULTANEOUSLY] - uni USB to SD Card Adapter can read and write 2 cards at the same time, transfer your materials without transit and re-insert. Ideal for photographers, and media professionals.
  • [COMPACT DESIGN] - Easy to insert and remove your cards with the spring loaded mechanism. The extra braided nylon cable is device friendly with a compact interface design. Will never interfere with other accessories. The aluminum case has better heat dissipation and higher durability, prolonging the product life well.
  • [PLUG & PLAY] - No additional software or driver required, also fully powered by your USB port, no additional power supply needed. Driver free, use it on your Windows, macOS, Chrome OS, Linux laptops / PCs.
  • [UNIVERSAL COMPATIBILITY] - The SD card adapter supports up to 2TB card capacity, expanding the range of available cards. Compatible with SD, SDXC, SDHC, MMC, RS-MMC, Micro SDXC, Micro SD, Micro SDHC and UHS-I cards. (see description for compatibility)
  • [WHAT YOU GET] - uni High-Speed Memory Card Reader with 24/7 customer support and hassle-free 18 months warranty. Please rest assured that our professional technical support team stands behind our products and our customers.

Full Specifications

Branduni
ColorGrey
Media TypeMMC, RS-MMC, SD Card, SDHC, SDXC, UHS-1, microSD, microSDHC, microSDXC
Slot Count2
ConnectivityUSB
Model NumberUSUNIASD02
CompatibilityPC, Mac, Linux
Mfr Part NumberUSUNIASD02
Special FeatureCompact, Plug & Play
Compatible DevicesLaptop, Tablet
Data Transfer Rate5 Gigabits Per Second
Hardware InterfaceMedia Card, MicroSD, Multimedia Card, USB 3.0, microSDHC, microSDXC
Additional FeaturesCompact, Plug & Play
Connectivity TechnologyUSB Type A
Item Dimensions L x W x H1.97"L x 1.3"W x 0.37"H
Full listing titleuni SD Card Reader, High-Speed USB 3.0 to Micro SD Card Adapter, Aluminum Computer Memory Card Reader Dual Slots, for SD/SDXC/SDHC/MMC/Micro SDXC/TF/Micro SDHC | Laptop, PC, and More

Ready to buy?

uni SD Card Reader, High-Speed USB 3.0 to Micro SD Card Adapter, Aluminum Computer Memory Card Reader Dual Slots, for SD/SDXC/SDHC/MMC/Micro SDXC/TF/Micro SDHC | Laptop, PC, and More is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $9.49

*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.

Related Accessories

Keep exploring SpecPicks

Other buying guides

Browse the catalog

Editorial

More guides & deep dives from the SpecPicks archive

Browse all articles & guides →

More reviews from the SpecPicks archive

Browse all reviews →

Earliest SpecPicks reviews

Browse full archive →
uni SD Card Reader, High-Speed USB 3.0 to Micro SD Card Adapter, Aluminum Computer Memory Card Reader Dual Slots, for SD/SDXC/SDHC/MMC/Micro SDXC/TF/Micro SDHC | Laptop, PC, and More
$9.49
View on Amazon →