512MB 240-pin PC2-5300 DDR2-667 non-ECC non-Registered DIMM.

This module may be manufactured by Micron, Samsung, Transcend, TwinMOS or SuperTalent depending on availability.

This module can be run in Dual Channel mode.

DDR2 - Double data rate 2 - A new version of DDR which is twice as fast as original DDR. Please Note : This module is only for desktop machines