ATX
The motherboard form factor AT only has the 5-pin AT keyboard connector built in.
9.6" X 9.6"
9.6 x 9.6
The maximum size for a microATX motherboard is 244mm*244mm or 9.6in*9.6in.
Case: minitowers:compact cases,low-profile cases or slimline cases. Power supply: ATX power supply
The panel involves a motherboard that is connected by pins to the FP connector. The motherboard uses a standard FP connector, therefore, easy to figure out.
LPX or mini LPX uses a riser card ( also called a bus riser or daughter card). LPX motherboard has the riser card near the center, whereas the NLX motherboard has the riser at the edge of the board.
The AT form factor measures 12" x 13.8" compared to the smaller ATX at 12" x 9.6". The power supplies for AT systems supply +5, -5, +12, and -12 volts to the motherboard and other components, and uses two power connections, the P8 connector and the P9 connector. The power supplies for ATX systems supply the same voltages plus a +3.3 volt circuit for alow-voltage CPU, and use a single power connector called a P1 connector. AT motherboards, which are no longer produced, were difficult to install, service, and upgrade and with the AT form factor the CPU was placed on the motherboard in front of the expansion slots resulting in long cards not fitting because they bump into the CPU. On an ATX motherboard, the CPU and the memory slots are rotated 90 degrees from the position on the AT motherboard, so instead of sitting in front of the expansion slots, the CPU and memory slots sit beside them allowing the use of full length expansion cards.
A regular ATX motherboard uses a single 20-pin P1 connector with optional 4-pin auxillary power connector
ZIF is used on almost all modern processors. You need to find out which socket it uses.
The maximum size of a microATX motherboard is 244 mm × 244 mm (9.6 in × 9.6 in)
24-Pin