How to find what type of controller the computer uses
Before determining the controller you have, you must determine what controller you are attempting to identify and whether or not the controller is an expansion card or on the motherboard. Today, with most computers, the controller is integrated onto the motherboard.
The graphics or AGP controller is integrated onto the computer motherboard and enables the graphics adapter to work with the computer. To determine the graphics controller on your motherboard, you must consult the documentation of your motherboard. Your graphics controller should be either ALi, AMD, Intel, NVidia, SiS, or VIA.
Users running Microsoft Windows 98, ME, 2000, or XP can also determine their graphics controller by opening the System devices in Device Manager and looking for an AGP device. For example, "Intel(R) 82815 processor to AGP controller" and "SiS Accelerated Graphics Port" are examples of what Device Manager may list for your graphics controller.
ATA/ATAPI or SCSI controller
Although many computers have an integrated disk controller on the motherboard, many computers may also utilize an expansion controller card. If your computer disk drives are not connected directly to the motherboard, it is likely you are using this controller.
Motherboard ATA/ATAPI or SCSI controller
If the controller is integrated on the motherboard, consult the documentation that came with your motherboard to determine what ATA/ATAPI controller it uses. If you do not have a hard copy of the documentation, visit your motherboard manufacturer's website for support.
Expansion card ATA/ATAPI or SCSI controller
Although many computers have an integrated USB controller on the motherboard, many computers may also have an expansion USB controller card. If your USB connectors are not connected directly to the motherboard, it is likely your computer is using an expansion card.
Motherboard USB controller
If your USB controller is integrated on the motherboard, consult the motherboard documentation or visit the motherboard manufacturer's web page for USB controller help.
Expansion card USB controller
If your USB controller is an expansion card, consult the manufacturer's documentation or visit the manufacturer's web page for additional information about your USB controller.
If your USB controller is working and you have Windows you can determine the USB controller by opening the Universal Serial Bus controllers category in Device Manager. For example, "SiS 7001 PCI to USB Open Host controller" indicates a computer is using the SiS chipset.
Product listing or specifications
Below is an example of how you may list your computer's graphics controller in your product specifications.
Intel(R) 82815 Processor to AGP controller
Below is an example of how you may list your computer's disk drive controller in your product specifications.
Intel(R) 82801BA Ultra ATA Storage controller - 244B
Below is an example of how you may list your computer's USB controller in your product specifications.
Intel(R) 82801BA USB Universal Host controller
Drivers or installation
Replacement or repair
Although it is not very common for a graphics controller to fail, like any other part of your computer it is capable of becoming faulty or bad. If you believe your graphics controller is bad, it is recommended that you purchase a new motherboard instead of trying to have the motherboard repaired.
If you believe your disk controller has failed and the disk controller is on the motherboard, substitute the disk controller with a new expansion card or have the motherboard replaced.
If you believe your disk controller has failed and the disk controller is an expansion card, replace the expansion card.
- How to find what hardware is installed in the computer.
- See the controller definition for further information and related links.
- Computer motherboard help and support.