4GB KIT (4 x 1GB) for Dell Optiplex Series GX270 (Desktop and MiniTower). DIMM DDR Non-ECC PC3200 400MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com
Amazon.com: Genuine Dell OptiPlex GX270 Small Form Factor SFF Socket 478 Motherboard Part Numbers: CG555, H1291, DG286, C2057, YF936, X1105, H6405, FC092, X8677, J9057 : Electronics