05ac:921c — A1082 [Cinema HD Display 23"]
Apple, Inc.
- Vendor ID
- 05ac
- Product ID
- 921c
- Combined
- 05ac:921c
- Decimal
- 1452:37404
What is this device?
This is the USB identifier for a A1082 [Cinema HD Display 23"] manufactured by Apple, Inc.. The vendor ID 05ac is registered to Apple, Inc. with the USB Implementers Forum, and 921c is the product ID that Apple, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 05ac:921c Apple, Inc. A1082 [Cinema HD Display 23"].
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 05ac:921c Apple, Inc. A1082 [Cinema HD Display 23"]
You can filter directly with lsusb -d 05ac:921c, or get the full descriptor dump with lsusb -v -d 05ac:921c. Kernel messages from dmesg show the same pair as idVendor=05ac, idProduct=921c.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_05AC&PID_921C USB\VID_05AC&PID_921C&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_05AC&PID_921C"
macOS
$ system_profiler SPUSBDataType
A1082 [Cinema HD Display 23"]:
Product ID: 0x921c
Vendor ID: 0x05ac (Apple, 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. Apple, Inc. official support →
Raw usb.ids entry
The exact lines this page is generated from, in the upstream source file:
05ac Apple, Inc. 921c A1082 [Cinema HD Display 23"]