Windows: List all the hidden devices inside the Device Manager/Computer Management

Devices that you install that are not connected to the computer (such as a Universal Serial Bus aka USB device) are not displayed in the Device Manager, even when you click Show hidden devices.

image 

What now?

The key is an extra system variable:

set devmgr_show_nonpresent_devices=1

See also:

Microsoft KB 315539 – Device Manager does not display devices that are not connected to the Windows XP-based computer

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