PC Memory Ram - TOOGOO(R) 2GB(2X1GB) DDR2 533 MHZ PC2 4200 240 PINS DIMM MEMORY RAM DESKTOP PC NON-ECC Form Factor: DIMM 240-pin Bus Speed: PC2-4200 (DDR2-533) Number of Modules: 2 Capacity per Module: 1GB Speed: 533MHz