Listare, rimuovere,rescan di device usb, pci, etc.

The DevCon command-line utility functions as an alternative to Device Manager

Example DevCon commands

devcon -m:\\test find pci\*

Lists all known PCI devices on the computer test. (By using-m, you can specify a target computer. You must use Interprocess communication (IPC) to access the computer.)


devcon find *

Lists device instances of all devices that are present on the local computer.

devcon find pci\*

Lists all known peripheral component interconnect (PCI) devices that are on the local computer (this command assumes that a device is PCI if it has a hardware ID that is prefixed by "PCI\").

devcon find =ports *pnp*

Lists devices that are present that are a member of the ports setup class and that contain "PNP" in their hardware ID.

devcon find =ports @root\*

Lists devices that are present that are a member of the ports setup class and that are in the "root" branch of the enum tree (the instance ID is prefixed by "root\"). Note that you should not make any programmatic assumption about how an instance ID is formatted. To determine root devices, you can look at device status bits. This feature is included in DevCon to aid in debugging.

devcon findall =ports

Lists "nonpresent" devices and devices that are present for the ports class. This includes devices that have been removed, devices that have been moved from one slot to another, and, in some cases, devices that have been enumerated differently due to a BIOS change.

devcon listclass usb 1394

Lists all devices that are present for each class named (in this case, USB and 1394).

devcon remove @usb\*

Removes all USB devices. Devices that are removed are listed with their removal status.

devcon rescan

Rescans for new Plug and Play devices.

devcon resources =ports

Lists the resources that are used by all devices in the ports setup class.

devcon restart =net @'ROOT\*MSLOOP\0000

Restarts the loopback adaptor ROOT\*MSLOOP\0000. The single quotation mark in the command indicates that the instance ID must be taken literally.

devcon hwids=mouse

Lists all hardware IDs of mouse class devices on the system.

devcon sethwid @ROOT\LEGACY_BEEP\0000 := beep

Assign the hardware ID, beep, to the legacy beep device.

devcon stack =ports

Lists the expected driver stack for the device. This includes device and class upper/lower filters, and the controlling service.

devcon status @pci\*

Lists the status of each device present that has an instance ID that begins with "pci\".

devcon status @ACPI\PNP0501\1

Lists the status of a specific device instance, in this case an Advanced Configuration and Power Interface (ACPI)-enumerated serial port.

devcon status @root\rdp_mou\0000

Lists the status of the Microsoft Terminal Server or Terminal Services mouse driver.

devcon status *PNP05*

Lists the status of all COM ports.

devcon update mydev.inf *pnp0501

Updates all devices that exactly match the hardware ID *pnp0501 to use the best driver in Mydev.inf that is associated with the hardware ID *pnp0501.

Notes

DevCon will return an error level for use in scripts: "0" indicates a success. "1" indicates that a restart is required. "2" indicates a failure. "3" indicates a syntax error.

devcon -r install %WINDIR%\Inf\Netloop.inf *MSLOOP

Installs a new instance of the Microsoft loopback adaptor. This creates a new root-enumerated device node with which you can install a "virtual device," such as the loopback adaptor. This command also restarts the computer silently if a restart is required.
http://support.microsoft.com/kb/311272