2GB (4x512MB), DDR2 400MHz, ECC, Registered
HP 2GB DDR2-400, 2 GB, 4 x 0.5 GB, DDR2, 400 MHz, 240-pin DIMM
HP 2GB DDR2-400. Component for: PC/Server, Internal memory: 2 GB, Memory layout (modules x size): 4 x 0.5 GB, Internal memory type: DDR2, Memory speed: 400 MHz, Memory form factor: 240-pin DIMM, CAS latency: 3, ECC