KINGSTON KVR533D2S4/512

512MB 533MHZ DDR2 SODIMM MEM NON-ECC PC2-4200

DDR2 memory was developed by JEDEC, the memory industry's standards organization of which Kingston is a member company. DDR2 memory chips and modules use a naming convention similar to that used for the current DDR memory modules, but are not backward compatible due to incompatible module connections (number of pins), voltage and DRAM technology. DDR2 memory modules have a different key or notch than the same-sized DDR modules to prevent their insertion into an incompatible memory socket.
DDR2 memory features faster speeds, higher data bandwidths, lower power consumption, and enhanced thermal performance.