DDR2-667, PC2-5300, Registered, ECC, 1.8V, 240-Pin DIMMs (2 x 4GB 2Rx4 DIMMs)
Dataram
Dataram - GRSX4200M2S/4GB
Dataram - GRSX4200M2/16GB
Dataram - GRSX4200M2D/16GB