0461:4e04 — Lenovo Keyboard KB1021

Primax Electronics, Ltd

Vendor ID: 0461
Product ID: 4e04
Combined: 0461:4e04
Decimal: 1121:19972

What is this device?

This is the USB identifier for a Lenovo Keyboard KB1021 manufactured by Primax Electronics, Ltd. The vendor ID 0461 is registered to Primax Electronics, Ltd with the USB Implementers Forum, and 4e04 is the product ID that Primax Electronics, Ltd assigned to this particular model. When you run lsusb on Linux, this device appears as 0461:4e04 Primax Electronics, Ltd Lenovo Keyboard KB1021.

How to identify it on your system

Linux

$ lsusb
Bus 001 Device 004: ID 0461:4e04 Primax Electronics, Ltd Lenovo Keyboard KB1021

You can filter directly with lsusb -d 0461:4e04, or get the full descriptor dump with lsusb -v -d 0461:4e04. Kernel messages from dmesg show the same pair as idVendor=0461, idProduct=4e04.

Windows

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

USB\VID_0461&PID_4E04
USB\VID_0461&PID_4E04&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0461&PID_4E04"

macOS

$ system_profiler SPUSBDataType
    Lenovo Keyboard KB1021:
      Product ID: 0x4e04
      Vendor ID: 0x0461  (Primax Electronics, 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:

0461  Primax Electronics, Ltd
	4e04  Lenovo Keyboard KB1021

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