043e:9a57 — UltraGear Monitor

This is the USB identifier for a UltraGear Monitor manufactured by LG Electronics USA, Inc.. The vendor ID 043e is registered to LG Electronics USA, Inc. with the USB Implementers Forum, and 9a57 is the product ID that LG Electronics USA, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 043e:9a57 LG Electronics USA, Inc. UltraGear Monitor.

Linux

$ lsusb
Bus 001 Device 004: ID 043e:9a57 LG Electronics USA, Inc. UltraGear Monitor

You can filter directly with lsusb -d 043e:9a57, or get the full descriptor dump with lsusb -v -d 043e:9a57. Kernel messages from dmesg show the same pair as idVendor=043e, idProduct=9a57.

Windows

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

USB\VID_043E&PID_9A57
USB\VID_043E&PID_9A57&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_043E&PID_9A57"

macOS

$ system_profiler SPUSBDataType
    UltraGear Monitor:
      Product ID: 0x9a57
      Vendor ID: 0x043e  (LG Electronics USA, Inc.)

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:

043e  LG Electronics USA, Inc.
	9a57  UltraGear Monitor

• 043e:9804 DMB Receiver Control
• 043e:9a10 34UC88-B
• 043e:9a11 34UC88-B
• 043e:9a39 27UP850 - WK.AEUDCSN - External Monitor 4K
• 043e:9c01 LGE Sync

See all 21 devices from LG Electronics USA, Inc. →