0a12:0101 — Casira with BlueCore2-Flash Module

This is the USB identifier for a Casira with BlueCore2-Flash Module manufactured by Cambridge Silicon Radio, Ltd. The vendor ID 0a12 is registered to Cambridge Silicon Radio, Ltd with the USB Implementers Forum, and 0101 is the product ID that Cambridge Silicon Radio, Ltd assigned to this particular model. When you run lsusb on Linux, this device appears as 0a12:0101 Cambridge Silicon Radio, Ltd Casira with BlueCore2-Flash Module.

Linux

$ lsusb
Bus 001 Device 004: ID 0a12:0101 Cambridge Silicon Radio, Ltd Casira with BlueCore2-Flash Module

You can filter directly with lsusb -d 0a12:0101, or get the full descriptor dump with lsusb -v -d 0a12:0101. Kernel messages from dmesg show the same pair as idVendor=0a12, idProduct=0101.

Windows

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

USB\VID_0A12&PID_0101
USB\VID_0A12&PID_0101&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0A12&PID_0101"

macOS

$ system_profiler SPUSBDataType
    Casira with BlueCore2-Flash Module:
      Product ID: 0x0101
      Vendor ID: 0x0a12  (Cambridge Silicon Radio, Ltd)

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.

The exact lines this page is generated from, in the upstream source file:

0a12  Cambridge Silicon Radio, Ltd
	0101  Casira with BlueCore2-Flash Module

• 0a12:000b Nanosira5-ROM
• 0a12:0042 SPI Converter
• 0a12:0043 Bluetooth Device
• 0a12:0100 Casira with BlueCore2-External Module
• 0a12:0102 Casira with BlueCore3-Multimedia Module
• 0a12:0103 Casira with BlueCore3-Flash Module
• 0a12:0104 Casira with BlueCore4-External Module
• 0a12:0105 Casira with BlueCore4-Multimedia Module

See all 27 devices from Cambridge Silicon Radio, Ltd →