You have a computer running Windows 2000 Professional. You have purchased a new USB scanner. You attached it to the USB port. Then you go to device manager to see the status of the USB port. The status of the USB port is shown below.  What should you do to resolve this problem?（　）

• A、Update the scanner drivers using certified drivers
• B、Enable the USB port in the computers BIOS.
• C、Contact the maker or vendor for you system and obtain the current version of BIOS.
• D、Enable the USB hub controller in device manager.