2GB RAM Memory Upgrade for the Toshiba Satellite A205 Series Laptops (DDR2-667, PC2-5300, SODIMM) Guaranteed Compatible for the Toshiba A205 Series Systems (A205-S4587, A205-S4777, A205-S5000, A205-S5855 etc.) If unsure about compatibility or your model, feel free to give us a call! Speed up your system with up to 4.0GB of Memory! Lifetime Replacement Warranty! Will ship the same day when ordered at or before 4pm EST! All others ship next day! Fully-staffed call center to help with installation or inquiries! Call 866-335-1355 with questions or for help!