04b3:4550 — NVRAM (128 KB)
IBM Corp.
- Vendor ID
- 04b3
- Product ID
- 4550
- Combined
- 04b3:4550
- Decimal
- 1203:17744
What is this device?
This is the USB identifier for a NVRAM (128 KB) manufactured by IBM Corp.. The vendor ID 04b3 is registered to IBM Corp. with the USB Implementers Forum, and 4550 is the product ID that IBM Corp. assigned to this particular model. When you run lsusb on Linux, this device appears as 04b3:4550 IBM Corp. NVRAM (128 KB).
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 04b3:4550 IBM Corp. NVRAM (128 KB)
You can filter directly with lsusb -d 04b3:4550, or get the full descriptor dump with lsusb -v -d 04b3:4550. Kernel messages from dmesg show the same pair as idVendor=04b3, idProduct=4550.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_04B3&PID_4550 USB\VID_04B3&PID_4550&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_04B3&PID_4550"
macOS
$ system_profiler SPUSBDataType
NVRAM (128 KB):
Product ID: 0x4550
Vendor ID: 0x04b3 (IBM Corp.)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.
Raw usb.ids entry
The exact lines this page is generated from, in the upstream source file:
04b3 IBM Corp. 4550 NVRAM (128 KB)