04d9:a29f — Microarray fingerprint reader
Holtek Semiconductor, Inc.
- Vendor ID
- 04d9
- Product ID
- a29f
- Combined
- 04d9:a29f
- Decimal
- 1241:41631
What is this device?
This is the USB identifier for a Microarray fingerprint reader manufactured by Holtek Semiconductor, Inc.. The vendor ID 04d9 is registered to Holtek Semiconductor, Inc. with the USB Implementers Forum, and a29f is the product ID that Holtek Semiconductor, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 04d9:a29f Holtek Semiconductor, Inc. Microarray fingerprint reader.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 04d9:a29f Holtek Semiconductor, Inc. Microarray fingerprint reader
You can filter directly with lsusb -d 04d9:a29f, or get the full descriptor dump with lsusb -v -d 04d9:a29f. Kernel messages from dmesg show the same pair as idVendor=04d9, idProduct=a29f.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_04D9&PID_A29F USB\VID_04D9&PID_A29F&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_04D9&PID_A29F"
macOS
$ system_profiler SPUSBDataType
Microarray fingerprint reader:
Product ID: 0xa29f
Vendor ID: 0x04d9 (Holtek Semiconductor, Inc.)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:
04d9 Holtek Semiconductor, Inc. a29f Microarray fingerprint reader