0424:4944 — USB47xx/49xx hub integrated serial port (Microchip Technology, Inc. (formerly SMSC))

What is this device?

This is the USB identifier for a USB47xx/49xx hub integrated serial port manufactured by Microchip Technology, Inc. (formerly SMSC). The vendor ID 0424 is registered to Microchip Technology, Inc. (formerly SMSC) with the USB Implementers Forum, and 4944 is the product ID that Microchip Technology, Inc. (formerly SMSC) assigned to this particular model. When you run lsusb on Linux, this device appears as 0424:4944 Microchip Technology, Inc. (formerly SMSC) USB47xx/49xx hub integrated serial port.

How to identify it on your system

Linux

$ lsusb
Bus 001 Device 004: ID 0424:4944 Microchip Technology, Inc. (formerly SMSC) USB47xx/49xx hub integrated serial port

You can filter directly with lsusb -d 0424:4944, or get the full descriptor dump with lsusb -v -d 0424:4944. Kernel messages from dmesg show the same pair as idVendor=0424, idProduct=4944.

Windows

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

USB\VID_0424&PID_4944
USB\VID_0424&PID_4944&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0424&PID_4944"

macOS

$ system_profiler SPUSBDataType
    USB47xx/49xx hub integrated serial port:
      Product ID: 0x4944
      Vendor ID: 0x0424  (Microchip Technology, Inc. (formerly SMSC))

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. Microchip Technology, Inc. (formerly SMSC) official support →

Raw usb.ids entry

The exact lines this page is generated from, in the upstream source file:

0424  Microchip Technology, Inc. (formerly SMSC)
	4944  USB47xx/49xx hub integrated serial port

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