Kingston Technology 512 MB Memory for Select Imac G5 Desktops Single (Not a kit) 400 MHz (PC 3200) 184-Pin DDR SDRAM KTA-IMAC400/512 Includes one 512MB module of 400MHz DDR Desktop memory for Apple Works with imac g5 1.6/1.8ghz and 2ghz Memory designed, manufactured and tested to the specifications of each particular brand name computer system From the industry leader in PC memory 184-pin DIMM type