07cf:3801 — WMP-1 MP3-Watch

Casio Computer Co., Ltd

Vendor ID: 07cf
Product ID: 3801
Combined: 07cf:3801
Decimal: 1999:14337

What is this device?

This is the USB identifier for a WMP-1 MP3-Watch manufactured by Casio Computer Co., Ltd. The vendor ID 07cf is registered to Casio Computer Co., Ltd with the USB Implementers Forum, and 3801 is the product ID that Casio Computer Co., Ltd assigned to this particular model. When you run lsusb on Linux, this device appears as 07cf:3801 Casio Computer Co., Ltd WMP-1 MP3-Watch.

How to identify it on your system

Linux

$ lsusb
Bus 001 Device 004: ID 07cf:3801 Casio Computer Co., Ltd WMP-1 MP3-Watch

You can filter directly with lsusb -d 07cf:3801, or get the full descriptor dump with lsusb -v -d 07cf:3801. Kernel messages from dmesg show the same pair as idVendor=07cf, idProduct=3801.

Windows

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

USB\VID_07CF&PID_3801
USB\VID_07CF&PID_3801&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_07CF&PID_3801"

macOS

$ system_profiler SPUSBDataType
    WMP-1 MP3-Watch:
      Product ID: 0x3801
      Vendor ID: 0x07cf  (Casio Computer Co., Ltd)

Driver help

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.

Raw usb.ids entry

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

07cf  Casio Computer Co., Ltd
	3801  WMP-1 MP3-Watch

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