Article ID : S500008503 / Last Modified : 11/04/2018

How do I check if the USB controller works properly?

    How do I check if the USB controller works properly?
    Or
    Why doesn't the PC recognize USB device?

    Check with the device manager to see if the USB controller works properly.

    Procedure:
    1) Open [Control Panel] in [Settings] -> [Start].
    2) Double click on the [System] icon to open [System Properties].
    3) Click [Device manager] tab and choose [View Devices by Type].
    4) Click [+] mark beside [Universal Serial Bus Controller] and see the [------- host controller] and [USB root hub].
    5) [USB controller] works properly if there is no [!] or [X] mark on it.

    * Re-install the driver which has [!] or [X] mark.
    * Re-install USB device driver, when USB controller works properly but doesn't recognize USB device.