1GB KIT (2 x 512MB) For Apple iMac Series G3 400Mhz Indigo G3 400Mhz Special Edition G3 500 (Indigo) G3 500/600 (Blue Dalmation) G3 500/600 (Flower Power) G3 600 (Graphite/Snow) G3 700 Special Edition. DIMM SD NON-ECC PC133 133MHZ RAM Memory. Genuine A-Tech Brand. 1GB KIT (2 x 512MB) DIMM SD NON-ECC PC133 133MHZ RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Apple iMac Series. (See Compatibility List Below)