1.5GB KIT (3 x 512MB) For Apple Power Mac Series G4 Cube. DIMM SD NON-ECC PC100 100MHz RAM Memory. Genuine A-Tech Brand. 1.5GB KIT (3 x 512MB) DIMM SD NON-ECC PC100 100MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Apple Power Mac Series. (See Compatibility List Below)