3838:0001 — 5-in-1 Card Reader

This is the USB identifier for a 5-in-1 Card Reader manufactured by WEM. The vendor ID 3838 is registered to WEM with the USB Implementers Forum, and 0001 is the product ID that WEM assigned to this particular model. When you run lsusb on Linux, this device appears as 3838:0001 WEM 5-in-1 Card Reader.

Linux

$ lsusb
Bus 001 Device 004: ID 3838:0001 WEM 5-in-1 Card Reader

You can filter directly with lsusb -d 3838:0001, or get the full descriptor dump with lsusb -v -d 3838:0001. Kernel messages from dmesg show the same pair as idVendor=3838, idProduct=0001.

Windows

In Device Manager, open the device, go to Details → Hardware Ids. This device reports:

USB\VID_3838&PID_0001
USB\VID_3838&PID_0001&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_3838&PID_0001"

macOS

$ system_profiler SPUSBDataType
    5-in-1 Card Reader:
      Product ID: 0x0001
      Vendor ID: 0x3838  (WEM)

Having driver issues with this device? Most USB devices are handled by a generic class driver; if yours shows up as an unknown device, confirm the ID above first, then check the manufacturer's downloads page.

The exact lines this page is generated from, in the upstream source file:

3838  WEM
	0001  5-in-1 Card Reader

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