Identifying Motherboard Slots
Motherboard components are color coded to make it easy for technicians to identify expansion slots at a glance. The expansion ports are also color coded to help end users to identify ports for connecting peripherals. In this article we will look at the various colors that motherboard manufacturers use for peripheral connection ports and expansion slots.
ATX motherboards generally use the same colors to denote the different types of expansion slots. In addition to having standardized dimensions that can help identify ports, there are special colors that are used. ISA slots are usually black, PCI slots are usually white or beige, and the AGP slots are usually brown.
The colors not only designate the type of slot, but they may also represent versions or iterations of a technology. You may find AGP slot in green, orange or light blue, and these colors may signify that the AGP slot is 8x/4x-AGP 3.0 or PCI Express compliant.
Ensure that any new computer you purchase has PCI-Express slots, as these are faster than the older PCI slots. The best way to ensure that a motherboard has a PCI Express slot is to check the documentation that accompanies the board or ask a sales representative.