0543:1921 — Communicator Pocket PC
ViewSonic Corp.
- Vendor ID
- 0543
- Product ID
- 1921
- Combined
- 0543:1921
- Decimal
- 1347:6433
What is this device?
This is the USB identifier for a Communicator Pocket PC manufactured by ViewSonic Corp.. The vendor ID 0543 is registered to ViewSonic Corp. with the USB Implementers Forum, and 1921 is the product ID that ViewSonic Corp. assigned to this particular model. When you run lsusb on Linux, this device appears as 0543:1921 ViewSonic Corp. Communicator Pocket PC.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 0543:1921 ViewSonic Corp. Communicator Pocket PC
You can filter directly with lsusb -d 0543:1921, or get the full descriptor dump with lsusb -v -d 0543:1921. Kernel messages from dmesg show the same pair as idVendor=0543, idProduct=1921.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_0543&PID_1921 USB\VID_0543&PID_1921&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0543&PID_1921"
macOS
$ system_profiler SPUSBDataType
Communicator Pocket PC:
Product ID: 0x1921
Vendor ID: 0x0543 (ViewSonic Corp.)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:
0543 ViewSonic Corp. 1921 Communicator Pocket PC