04fe:0020 — HHKB-Classic
PFU, Ltd
- Vendor ID
- 04fe
- Product ID
- 0020
- Combined
- 04fe:0020
- Decimal
- 1278:32
What is this device?
This is the USB identifier for a HHKB-Classic manufactured by PFU, Ltd. The vendor ID 04fe is registered to PFU, Ltd with the USB Implementers Forum, and 0020 is the product ID that PFU, Ltd assigned to this particular model. When you run lsusb on Linux, this device appears as 04fe:0020 PFU, Ltd HHKB-Classic.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 04fe:0020 PFU, Ltd HHKB-Classic
You can filter directly with lsusb -d 04fe:0020, or get the full descriptor dump with lsusb -v -d 04fe:0020. Kernel messages from dmesg show the same pair as idVendor=04fe, idProduct=0020.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_04FE&PID_0020 USB\VID_04FE&PID_0020&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_04FE&PID_0020"
macOS
$ system_profiler SPUSBDataType
HHKB-Classic:
Product ID: 0x0020
Vendor ID: 0x04fe (PFU, 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:
04fe PFU, Ltd 0020 HHKB-Classic