kingston valueram 4gb 667mhz ddr2 ecc fully buffered cl5 dimm dual rank product : 667mhz ddr2 ecc fully buffered cl5 dimm dual rank, x4 form factor : memory module mem capacity : 4gb pieces/unit : 1 mem type : std 512m x 72 ecc 667mhz 240-pin fully buffered dimm compat : asus motherboard, gigabyte ga-7besh-rh motherboard, intel s5000pal server, iwill motherboard