2GB Memory Upgrade for Acer Aspire One D255, D255-2256, AOD255-2256 DDR2 PC2-5300 667MHz 200 pin SODIMM RAM (PARTS-QUICK BRAND) Capacity: 2GB Form Factor: 200 pin SO-DIMM DDR2 Speed: 667MHz PC2-5300 Halogen Free; ROHS Warranty: Lifetime Industry Standard Low Density Memory