Kingston Technology 2 GB DIMM Memory 533 MHz (PC2 4200) 240-Pin DDR2 SDRAM Single (Not a kit) KTD-DM8400A/2G Includes one 2GB module of 533MHz DDR2 Desktop Memory for Dell Replaces Dell A0515351, fits dimension 4700c, e520, xps gen 5, optiplex 210l,740,745,gx280,gx520,gx620, gx745, sx280, Memory designed, manufactured and tested to the specifications of each particular brand name computer system From the industry leader in PC memory 240-pin DIMM type Precision workstation 380,390, xps 600,700, and 710