047c:ffff — UPS Tower 500W LV

This is the USB identifier for a UPS Tower 500W LV manufactured by Dell Computer Corp.. The vendor ID 047c is registered to Dell Computer Corp. with the USB Implementers Forum, and ffff is the product ID that Dell Computer Corp. assigned to this particular model. When you run lsusb on Linux, this device appears as 047c:ffff Dell Computer Corp. UPS Tower 500W LV.

Linux

$ lsusb
Bus 001 Device 004: ID 047c:ffff Dell Computer Corp. UPS Tower 500W LV

You can filter directly with lsusb -d 047c:ffff, or get the full descriptor dump with lsusb -v -d 047c:ffff. Kernel messages from dmesg show the same pair as idVendor=047c, idProduct=ffff.

Windows

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

USB\VID_047C&PID_FFFF
USB\VID_047C&PID_FFFF&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_047C&PID_FFFF"

macOS

$ system_profiler SPUSBDataType
    UPS Tower 500W LV:
      Product ID: 0xffff
      Vendor ID: 0x047c  (Dell Computer Corp.)

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:

047c  Dell Computer Corp.
	ffff  UPS Tower 500W LV

See all 1 devices from Dell Computer Corp. →