55aa:b000 — USB to CompactFlash Card Reader
OnSpec Electronic, Inc.
- Vendor ID
- 55aa
- Product ID
- b000
- Combined
- 55aa:b000
- Decimal
- 21930:45056
What is this device?
This is the USB identifier for a USB to CompactFlash Card Reader manufactured by OnSpec Electronic, Inc.. The vendor ID 55aa is registered to OnSpec Electronic, Inc. with the USB Implementers Forum, and b000 is the product ID that OnSpec Electronic, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 55aa:b000 OnSpec Electronic, Inc. USB to CompactFlash Card Reader.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 55aa:b000 OnSpec Electronic, Inc. USB to CompactFlash Card Reader
You can filter directly with lsusb -d 55aa:b000, or get the full descriptor dump with lsusb -v -d 55aa:b000. Kernel messages from dmesg show the same pair as idVendor=55aa, idProduct=b000.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_55AA&PID_B000 USB\VID_55AA&PID_B000&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_55AA&PID_B000"
macOS
$ system_profiler SPUSBDataType
USB to CompactFlash Card Reader:
Product ID: 0xb000
Vendor ID: 0x55aa (OnSpec Electronic, 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:
55aa OnSpec Electronic, Inc. b000 USB to CompactFlash Card Reader