512MB KIT (2 x 256MB) For Intel SE Series SE440BX SE440BX-2. DIMM SD NON-ECC PC100 100MHz RAM Memory. Genuine A-Tech Brand. 512MB KIT (2 x 256MB) DIMM SD NON-ECC PC100 100MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Intel SE Series. (See Compatibility List Below)