16d8:5543 — CDMA 2000 1xRTT/1xEVDO modem
CMOTECH Co., Ltd.
- Vendor ID
- 16d8
- Product ID
- 5543
- Combined
- 16d8:5543
- Decimal
- 5848:21827
What is this device?
This is the USB identifier for a CDMA 2000 1xRTT/1xEVDO modem manufactured by CMOTECH Co., Ltd.. The vendor ID 16d8 is registered to CMOTECH Co., Ltd. with the USB Implementers Forum, and 5543 is the product ID that CMOTECH Co., Ltd. assigned to this particular model. When you run lsusb on Linux, this device appears as 16d8:5543 CMOTECH Co., Ltd. CDMA 2000 1xRTT/1xEVDO modem.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 16d8:5543 CMOTECH Co., Ltd. CDMA 2000 1xRTT/1xEVDO modem
You can filter directly with lsusb -d 16d8:5543, or get the full descriptor dump with lsusb -v -d 16d8:5543. Kernel messages from dmesg show the same pair as idVendor=16d8, idProduct=5543.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_16D8&PID_5543 USB\VID_16D8&PID_5543&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_16D8&PID_5543"
macOS
$ system_profiler SPUSBDataType
CDMA 2000 1xRTT/1xEVDO modem:
Product ID: 0x5543
Vendor ID: 0x16d8 (CMOTECH Co., 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:
16d8 CMOTECH Co., Ltd. 5543 CDMA 2000 1xRTT/1xEVDO modem