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Black rectangular USB-C and USB-A card reader with SD and microSD slots

LUOM

LUOM YC-320 2-in-1 USB 3.0 Type-C OTG card reader Black

SKU CH-RM5Z-MXGAV

Reads SD and microSD cards via USB-C or USB-A at up to 5Gbps, works with Android OTG devices, supports cards up to 128G

  • Type2-in-1
  • Slots2
  • Installation TypeExternal
  • ColorBlack
  • InterfaceUSB 3.0 (USB-C; USB-A)
  • Support - Compact FlashYes

Interface USB 3.0 (USB-C; USB-A)

  • Connect phones and PCs via USB-C and USB-A with OTG
  • Transfer data up to 5 Gbps on USB 3.0
  • Read SD and microSD cards up to 128 GB
  • Compact design fits in a pocket for travel
  • Plug-and-play operation needs no drivers or extra power

LUOM YC-320 USB 3.0 Type-C OTG Card Reader

The LUOM YC-320 is a compact 2-in-1 external card reader with USB-C and USB-A connectors. It reads SD and Micro SD cards up to 128G capacity, including UHS-I variants. The device works with Windows Vista and later, plus Android phones or tablets that support OTG. It is not compatible with iPhone, iPad or SIM cards.

Practical limits of USB 3.0 interface

Data transfers reach up to 5Gbps, roughly ten times faster than USB 2.0 at 480 Mbps, and the reader remains backward compatible with USB 1.0, 1.1 and 2.0 ports. Actual throughput depends on the card speed class and the host controller. Both card slots share the single USB 3.0 bus, so simultaneous heavy reads from both cards will divide the available bandwidth.

Check your setup before ordering

Verify that your computer, laptop, smartphone or tablet has a USB-A 3.0, USB-C or Thunderbolt 3 port and, for mobile devices, that OTG functionality is enabled. Confirm your memory cards are SDXC, SDHC, SD, MMC, RS-MMC, Micro SDXC, Micro SDHC, Micro SD or UHS-I types. No driver installation or external power supply is required.

Highlights

  • Connect phones and PCs via USB-C and USB-A with OTG
  • Transfer data up to 5 Gbps on USB 3.0
  • Read SD and microSD cards up to 128 GB
  • Compact design fits in a pocket for travel
  • Plug-and-play operation needs no drivers or extra power

Specifications

BrandLUOM
ModelYC-320
Type2-in-1
Slots2
Installation TypeExternal
ColorBlack
InterfaceUSB 3.0 (USB-C; USB-A)
Support - Compact FlashYes
Support - Memory StickYes
Support - MMCYes
Support - SDYes
Support - SmartMediaYes
Support - xDYes
Windows VistaWorks with Windows Vista

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Questions about this item

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

The reader includes both a USB-C and a USB-A 3.0 connector on one unit, so you can plug it into either port without choosing a separate version.

What does the 5 Gbps transfer rate mean when I copy photos to my laptop?

It is the USB 3.0 interface ceiling; real-world speeds depend on the card used, but UHS-I cards can approach this limit for large sequential transfers.

Does the USB 3.0 interface cap the speed of UHS-I microSD cards?

The USB 3.0 link runs at 5 Gbps, which is higher than the typical UHS-I card maximum, so the card remains the bottleneck, not the reader.

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