1GB KIT (2 x 512MB) For Dell Latitude C400 C610. SO-DIMM SD NON-ECC PC133 133MHZ RAM Memory. Genuine A-Tech Brand. 1GB KIT (2 x 512MB) SO-DIMM SD NON-ECC PC133 133MHZ RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Dell Latitude. (See Compatibility List Below)