173a:21ca — ACCU-CHEK Mobile Model U1

Roche

Vendor ID: 173a
Product ID: 21ca
Combined: 173a:21ca
Decimal: 5946:8650

What is this device?

This is the USB identifier for a ACCU-CHEK Mobile Model U1 manufactured by Roche. The vendor ID 173a is registered to Roche with the USB Implementers Forum, and 21ca is the product ID that Roche assigned to this particular model. When you run lsusb on Linux, this device appears as 173a:21ca Roche ACCU-CHEK Mobile Model U1.

How to identify it on your system

Linux

$ lsusb
Bus 001 Device 004: ID 173a:21ca Roche ACCU-CHEK Mobile Model U1

You can filter directly with lsusb -d 173a:21ca, or get the full descriptor dump with lsusb -v -d 173a:21ca. Kernel messages from dmesg show the same pair as idVendor=173a, idProduct=21ca.

Windows

In Device Manager, open the device, go to Details → Hardware Ids. This device reports:

USB\VID_173A&PID_21CA
USB\VID_173A&PID_21CA&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_173A&PID_21CA"

macOS

$ system_profiler SPUSBDataType
    ACCU-CHEK Mobile Model U1:
      Product ID: 0x21ca
      Vendor ID: 0x173a  (Roche)

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:

173a  Roche
	21ca  ACCU-CHEK Mobile Model U1