Are these 2 different type of expansion slots
Sockets have to do with Processors. Each processor fits in a certain socket. Put the wrong processor in the wrong socket and it won't work and will damage you PC. Pins have to do with RAM or PCI-E Components. RAM modules have a certain amount of pins that will fit in a certain DIMM. PCI-E also uses this term to find out if it will fit in your PCI-E.
dimm
single-ranked
DIMM is an open standard. DIMM is also copyrighted open standard.
PCI, PCI-e, AGP
Bank
P1 motherboards are "Socket 7", it should be written on the CPU socket. Also, they only have PCI and ISA expansion slots, AGP and PCI-E Video cards slots never appear on a P1 motherboard. The ram slots may be either 72-pin or 168-pin 'Dimm' slots (on desktop motehrboards, laptop boars could have either of these or 144-pin So-Dimm.
PCI, PCI-X, PCIe, and mini PCI.
the different notch positions keep someone from installing a DDR DIMM or DDR2 DIMM in the wrong memory slot.
DIMM stands for Dual Inline Memory Module. DIMM slots are the slots on a motherboard that hold the memory modules.
The type of computers that uses 68-pin micro-dimm and 144-pin so-dimm. :P problem... you just got trolled.
240-pin DDR3 dimm is currently the fastest memory. it can support quad, triple, or dual channels or be installed as a single dimm. it has an offset notch father from the center than a ddr2 dimm