8GB KIT (4 x 2GB) For Dell PowerEdge Series 1900 1950 1950 III 2900 2900 III 2950 2950 III M600 R900 SC1430. DIMM DDR2 ECC Fully Buffered PC2-4200 533MHz RAM Memory. Genuine A-Tech Brand. 8GB KIT (4 x 2GB) DIMM DDR2 ECC Fully Buffered PC2-4200 533MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Dell PowerEdge Series. (See Compatibility List Below)