0b05:4ca0 — Transformer Pad TF701T (ASUSTek Computer, Inc.)

What is this device?

This is the USB identifier for a Transformer Pad TF701T manufactured by ASUSTek Computer, Inc.. The vendor ID 0b05 is registered to ASUSTek Computer, Inc. with the USB Implementers Forum, and 4ca0 is the product ID that ASUSTek Computer, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 0b05:4ca0 ASUSTek Computer, Inc. Transformer Pad TF701T.

How to identify it on your system

Linux

$ lsusb
Bus 001 Device 004: ID 0b05:4ca0 ASUSTek Computer, Inc. Transformer Pad TF701T

You can filter directly with lsusb -d 0b05:4ca0, or get the full descriptor dump with lsusb -v -d 0b05:4ca0. Kernel messages from dmesg show the same pair as idVendor=0b05, idProduct=4ca0.

Windows

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

USB\VID_0B05&PID_4CA0
USB\VID_0B05&PID_4CA0&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0B05&PID_4CA0"

macOS

$ system_profiler SPUSBDataType
    Transformer Pad TF701T:
      Product ID: 0x4ca0
      Vendor ID: 0x0b05  (ASUSTek Computer, Inc.)

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:

0b05  ASUSTek Computer, Inc.
	4ca0  Transformer Pad TF701T

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