4GB Kit 2x 2GB Memory Ram DELL PowerEdge 1900 1950 1950 1955 2900 2950 M600 R900 SC1430 T110 PowerVault NF500 NF600 NX1950 Precision Workstation 490 690 690n R5400 R5400 T5400 T7400 Studio Hybrid 140G 4GB Kit (2x2GB) PC2-5300 DDR2 ECC Fully Buffered Server Memory Genuine A-Tech Memory Designed for the Dell POWEREDGE 1900 / 1950 / 1950 III / 1955 / 2900 / 2900 III / 2950 / 2950 III / M600 / R900 / SC1430 / T110 / POWERVAULT NF500 / NF600 / NX1950 / PRECISION WORKSTATION 490 / PRECISION WORKSTATION 690 (750W Chassis) or (1KW Chassis) / 690n (1KW Chassis) or (750W Chassis) / PRECISION R5400 and R5400-N Series / PRECISION T5400 / PRECISION T7400 / Studio Hybrid 140G Toll Free Technical Support at 1-866-557-4527 Lifetime Warranty