512MB STICK For Dell Inspiron Notebook Series 04Y212 1100 300m 4150 500M 5100 5160 600M 710m 8200 8500 8600c D505 V740. SO-DIMM DDR NON-ECC PC2100 266MHz RAM Memory. Genuine A-Tech Brand. 512MB STICK SO-DIMM DDR NON-ECC PC2100 266MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Dell Inspiron Notebook Series. (See Compatibility List Below)