0b05:4ca1 — Transformer Pad TF701T (Debug mode)

This is the USB identifier for a Transformer Pad TF701T (Debug mode) manufactured by ASUSTek Computer, Inc.. The vendor ID 0b05 is registered to ASUSTek Computer, Inc. with the USB Implementers Forum, and 4ca1 is the product ID that ASUSTek Computer, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 0b05:4ca1 ASUSTek Computer, Inc. Transformer Pad TF701T (Debug mode).

Linux

$ lsusb
Bus 001 Device 004: ID 0b05:4ca1 ASUSTek Computer, Inc. Transformer Pad TF701T (Debug mode)

You can filter directly with lsusb -d 0b05:4ca1, or get the full descriptor dump with lsusb -v -d 0b05:4ca1. Kernel messages from dmesg show the same pair as idVendor=0b05, idProduct=4ca1.

Windows

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

USB\VID_0B05&PID_4CA1
USB\VID_0B05&PID_4CA1&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0B05&PID_4CA1"

macOS

$ system_profiler SPUSBDataType
    Transformer Pad TF701T (Debug mode):
      Product ID: 0x4ca1
      Vendor ID: 0x0b05  (ASUSTek Computer, 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:

0b05  ASUSTek Computer, Inc.
	4ca1  Transformer Pad TF701T (Debug mode)

• 0b05:4c80 Transformer Pad TF300TG
• 0b05:4c90 Transformer Pad Infinity TF700
• 0b05:4c91 Transformer Pad Infinity TF700 (Debug mode)
• 0b05:4ca0 Transformer Pad TF701T
• 0b05:4d00 Transformer Prime TF201
• 0b05:4d01 Transformer Prime TF201 (debug mode)
• 0b05:4daf Transformer Pad Infinity TF700 (Fastboot)
• 0b05:5410 MeMO Pad HD 7 (MTP mode)

See all 83 devices from ASUSTek Computer, Inc. →