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

How do I check if the USB controller works properly?

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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.