055f:040b — ScanExpress A3 USB 1200 PRO
Mustek Systems, Inc.
- Vendor ID
- 055f
- Product ID
- 040b
- Combined
- 055f:040b
- Decimal
- 1375:1035
What is this device?
This is the USB identifier for a ScanExpress A3 USB 1200 PRO manufactured by Mustek Systems, Inc.. The vendor ID 055f is registered to Mustek Systems, Inc. with the USB Implementers Forum, and 040b is the product ID that Mustek Systems, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 055f:040b Mustek Systems, Inc. ScanExpress A3 USB 1200 PRO.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 055f:040b Mustek Systems, Inc. ScanExpress A3 USB 1200 PRO
You can filter directly with lsusb -d 055f:040b, or get the full descriptor dump with lsusb -v -d 055f:040b. Kernel messages from dmesg show the same pair as idVendor=055f, idProduct=040b.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_055F&PID_040B USB\VID_055F&PID_040B&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_055F&PID_040B"
macOS
$ system_profiler SPUSBDataType
ScanExpress A3 USB 1200 PRO:
Product ID: 0x040b
Vendor ID: 0x055f (Mustek Systems, 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:
055f Mustek Systems, Inc. 040b ScanExpress A3 USB 1200 PRO