Kingston KVR400X64SC3A/512 Valueram DDR Sdram Memory Module, 512 MB Memory Size, DDR SDRAM Memory Technology, 1 x 512 MB Number of Modules, 400 MHz Memory Speed, DDR400/PC3200 Memory Standard, Non-ECC Error Checking, Unbuffered Signal Processing, Gold Plated Plating, CL3 CAS Latency, 200-pin Number of Pins, UPC 740617076790 (KVR400X64SC3A512 KVR400X64SC3A-512 KVR400X64SC3A 512)