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Compact USB 3.0 dual-slot card reader with keychain loop

Corn Electronics

Corn Electronics USB 3.0 Dual Slot Card Reader 5Gbps

SKU CH-YVBE-7ZB9D

Reads and writes SD and microSD cards simultaneously at 5 Gbps via USB 3.0

  • Simultaneously read and write two cards with dual SD and TF slots
  • Transfer data up to 5 Gbps via USB 3.0 interface
  • Works instantly on Windows, Mac, Linux and Chrome OS without drivers
  • Supports high-capacity cards up to 512 GB for large media files
  • Ultra-compact at 66 × 20 × 11.5 mm with included keychain for portability

Dual-slot USB 3.0 card reader

This compact adapter adds SD and microSD slots to any computer with a USB 3.0 port. It reads and writes both cards at the same time, removing the need to swap media repeatedly. The device is powered entirely from the USB connection and requires no driver installation on Windows, macOS, Linux or Chrome OS. Photographers and mobile workers can transfer files directly from two cards in one step.

USB 3.0 5 Gbps interface limits

The USB 3.0 link caps sustained throughput at 5 Gbps, so actual transfer rates depend on the cards used and whether both slots are active. Simultaneous access to both cards shares the available bandwidth, which can reduce per-card speed compared with single-card operation. The reader supports cards up to 512 GB capacity, but does not accelerate cards beyond their own rated performance.

Replaces single-slot USB 2.0 readers

Users moving from a single-slot USB 2.0 reader gain a second card slot and roughly ten times the interface bandwidth. The upgrade is worthwhile when workflows involve copying from two cards at once or when moving large video files that saturate the older 2.0 link. If only one card is ever used and file sizes are modest, the older reader remains adequate.

How it compares

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

Price $16.99
Cheaper than about 60% of the 511 comparable items (median $18.99).

Specifications

No published specifications for this item yet.

Questions about this item

Should I pick a single-slot or this dual-slot reader?

This model has both an SD and a microSD slot so you can read or write to two cards at once without swapping.

What does the 5Gbps rating mean for my transfers?

It is the USB 3.0 bus ceiling; real-world speed depends on the card and drops when both slots are active.

Does the USB 3.0 plug limit the 512G capacity claim?

No, the 512G figure is the maximum card size the reader supports; the USB 3.0 link only governs transfer rate.

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