Dell 2x4GB DDR2 FBDIMM PC2-5300 Fully Buffered Dual Kit Pins: 240 Voltage: 1.8V Frequency: 667MHz Ranks: 2 Compatible Products A2146192 (Dell); A2257179 (Dell); A2257184 (Dell); A2257233 (Dell) Compatible Systems Dell PowerEdge PowerEdge 1900 PowerEdge 1950 PowerEdge 1950 III PowerEdge 1955 PowerEdge 2900 PowerEdge 2900 III PowerEdge 2950 PowerEdge 2950 III PowerEdge M600 PowerEdge R900 PowerEdge SC1430 Dell PowerVault PowerVault NF500 PowerVault NF600 Dell Precision Precision Workstation 490 Precision Workstation 690 / 690n Precision WorkStation R5400 Precision Workstation T5400 Precision Workstation T7400