The three types of motherboard are XT motherboard, AT motherboard and ATX motherboard.
1. XT motherboard:
The extended Technology motherboards are old model motherboards. Slot type processors, Low Insertion Force (LIF) sockets, DIMM RAM slots and ISA slots with 12 pin power connectors can be seen.
2. AT motherboard:
Advanced Technology motherboards has Pin Grid Array (PGA) socket, SDRAM slots, 20 pin power connector, PCI slots, and ISA slots. Example: motherboard for Pentium 3 processors.
3. ATX motherboard:
Advanced Technology extended motherboards are comparatively latest boards with MPGA processor sockets, DDR RAM slots, PCI slots, primary and secondary IDE interfaces, SATA connectors, 20 pin and 24 pin ATX power connectors and USB ports.
