Kingston Technology 2GB (2 x 1GB) 184-Pin PC2100 266Mhz DDR ECC Registered Server RAM Upgrade 2GB DDR266 Kit (2 x 1GB) Standard 128M X 72 266MHz 184-pin ECC Registered DIMM DDR, 2.5V, CL2.5 Mfr Equiv 300680-B21 (HP/Compaq); AD196A (HP/Compaq)