Along with the CPU the motherboard is probably the most important
componant in a personal computers. Every other device such as hard
disks, cd-roms, memory, CPU's, floppy drives is connected to and
runs off the motherboard. The motherboard dictates the speed of
all devices and is the circuit board which the power supply runs
through. A motherboard includes a variety of slots such as AGP,
PCI, AMR, parallel ports, ps/2 interface, on-board IDE, memory sockets
and much more.