We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black dual-slot card reader with USB-C and USB 3.0 connectors

Corn Electronics

Corn Electronics Dual USB 3.0 & USB-C Card Reader Black

SKU CH-HA3J-7PH17

Dual USB 3.0 and USB-C card reader reads SD and microSD cards simultaneously at up to 5 Gbps with driver-free plug-and-play on Windows, macOS, Linux and Android

  • Adapter typeMemory Card Reader Adapter
  • Design styleSD+TF
  • Product colorBlack
  • Transfers files at up to 5 Gbps via USB 3.0
  • Reads two cards at once to skip constant swapping
  • Works instantly with USB-C and USB-A ports, no drivers needed
  • Runs on Android, macOS, Windows 10/7/XP and Linux
  • Handles SD, microSD, SDHC, SDXC, MMC and more

Dual USB 3.0 and USB-C Card Reader for Memory Cards

The Corn Electronics adapter connects SD and microSD cards to devices with USB-A or USB-C ports. It reads both slots at the same time so you can move files between cards without swapping them. Transfer rates reach 5 Gbps on USB 3.0 and the reader falls back to USB 2.0 or 1.1 when needed. No driver installation is required on Windows, macOS, Linux or Android.

Suits photographers and mobile users who need

Photographers carrying SD and microSD media can offload both cards in one step. OTG-enabled phones and tablets gain immediate storage expansion. Users who only have USB-A ports still benefit from the USB 3.0 connector. Buyers who need more storage should look at something else. The reader does not add capacity or support card formats beyond those listed.

Simultaneous dual-card reading via USB 3.0 and USB-C

The single specification that decides fit is the ability to read an SD card and a microSD card at the same time through either USB-A 3.0 or USB-C. If your workflow requires copying between two cards without ejecting either, this adapter matches that need. If you only ever use one card at a time, a single-slot reader may be simpler.

How it compares

Measured against everything we stock in USB & Internal Card Readers, at today’s prices. Recalculated every night.

Price $10.99
Cheaper than about 80% of the 511 comparable items (median $18.99).

Specifications

Product
Adapter typeMemory Card Reader Adapter
Design styleSD+TF
Product colorBlack

Questions about this item

Does the box include any memory cards or cables, or just the reader itself?

Only the black dual-connector reader is supplied; SD, microSD or MMC cards must be purchased separately.

Should I pick the USB-C or USB 3.0 connector for my device?

Use whichever port your computer, tablet or phone provides — both connectors deliver the same 5 Gbps maximum speed.

Will I actually see 5 Gbps when copying photos from a UHS-I card to my laptop?

The 5 Gbps figure is the interface ceiling; real-world throughput depends on the card's own read speed and the host's USB implementation.

More in USB & Internal Card Readers

Similar items