16GB KIT (4 x 4GB) For Dell PowerEdge Series 1900 1950 1950 III 1955 2900 2900 III 2950 2950 III M600 R900 SC1430. DIMM DDR2 ECC Fully Buffered PC2-5300 667MHz RAM Memory. Genuine A-Tech Brand. 16GB KIT (4 x 4GB) DIMM DDR2 ECC Fully Buffered PC2-5300 667MHz 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)