4GB KIT (2 x 2GB) For Dell Inspiron Desktop Series 530a/c 530b/d 535 535s 537 537s 537s-002B 545 545s 546 546s I530-120B. DIMM DDR2 NON-ECC PC2-6400 800MHz RAM Memory. Genuine A-Tech Brand. 4GB KIT (2 x 2GB) DIMM DDR2 NON-ECC PC2-6400 800MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Dell Inspiron Desktop Series. (See Compatibility List Below)