2GB KIT (2 x 1GB) For Dell PowerEdge Series 440 6950 (ECC Unbuffered) 830 840 850 860 R200 SC430 SC440 T100 T105. DIMM DDR2 ECC Unbuffered PC2-5300 667MHz Dual Rank RAM Memory. Genuine A-Tech Brand. 2GB KIT (2 x 1GB) DIMM DDR2 ECC Unbuffered PC2-5300 667MHz Dual Rank 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)