1GB RAM Memory Upgrade for Compaq dc5700 Small Form Factor (DDR2-667, PC2-5300) Guaranteed Compatible for the Compaq Business Desktop dc5700 SFF Speed up your system with up to 4.0GB of RAM! 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!