17ef:1021 — ThinkPad Dock Hub [Cypress HX2VL]

Lenovo

Vendor ID: 17ef
Product ID: 1021
Combined: 17ef:1021
Decimal: 6127:4129

What is this device?

This is the USB identifier for a ThinkPad Dock Hub [Cypress HX2VL] manufactured by Lenovo. The vendor ID 17ef is registered to Lenovo with the USB Implementers Forum, and 1021 is the product ID that Lenovo assigned to this particular model. When you run lsusb on Linux, this device appears as 17ef:1021 Lenovo ThinkPad Dock Hub [Cypress HX2VL].

How to identify it on your system

Linux

$ lsusb
Bus 001 Device 004: ID 17ef:1021 Lenovo ThinkPad Dock Hub [Cypress HX2VL]

You can filter directly with lsusb -d 17ef:1021, or get the full descriptor dump with lsusb -v -d 17ef:1021. Kernel messages from dmesg show the same pair as idVendor=17ef, idProduct=1021.

Windows

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

USB\VID_17EF&PID_1021
USB\VID_17EF&PID_1021&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_17EF&PID_1021"

macOS

$ system_profiler SPUSBDataType
    ThinkPad Dock Hub [Cypress HX2VL]:
      Product ID: 0x1021
      Vendor ID: 0x17ef  (Lenovo)

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:

17ef  Lenovo
	1021  ThinkPad Dock Hub [Cypress HX2VL]

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