2574:0940 — CAM340

This is the USB identifier for a CAM340 manufactured by AVer Information, Inc.. The vendor ID 2574 is registered to AVer Information, Inc. with the USB Implementers Forum, and 0940 is the product ID that AVer Information, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 2574:0940 AVer Information, Inc. CAM340.

Linux

$ lsusb
Bus 001 Device 004: ID 2574:0940 AVer Information, Inc. CAM340

You can filter directly with lsusb -d 2574:0940, or get the full descriptor dump with lsusb -v -d 2574:0940. Kernel messages from dmesg show the same pair as idVendor=2574, idProduct=0940.

Windows

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

USB\VID_2574&PID_0940
USB\VID_2574&PID_0940&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_2574&PID_0940"

macOS

$ system_profiler SPUSBDataType
    CAM340:
      Product ID: 0x0940
      Vendor ID: 0x2574  (AVer Information, 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:

2574  AVer Information, Inc.
	0940  CAM340

• 2574:0901 VC520
• 2574:0910 CAM520
• 2574:0920 VC320
• 2574:0930 CAM530
• 2574:0950 VC322
• 2574:0960 VB342

See all 7 devices from AVer Information, Inc. →