Synchronous Dynamic Random Access Memory (SDRAM)
SDR SDRAM - DIMM 168 pins / 2 notches (SO-DIMM 144 pins / 1 notch)
DDR1 SDRAM - DIMM 184 pins / 1 notch (SO-DIMM 200 pins / 1 notch)
DDR2 SDRAM - DIMM 240 pins / 1 notch (SO-DIMM 200 pins / 1 notch)
DDR3 SDRAM - DIMM 240 pins / 1 notch (SO-DIMM 204 pins / 1 notch)
DDR4 SDRAM - DIMM 284 pins / 1 notch (SO-DIMM 256 pins / 1 notch)
Dual Inline Memory Module (DIMM) socket
Small Outline Dual Inline Memory Module (SO-DIMM) socket