2GB (1GBx2) Team High Performance Memory RAM Upgrade For PowerBook G4 1.33 17” (Al) M9110LL/A PowerBook 5,3 1. The Memory Kit comes with Life Time Warranty. at Amazon.com
Amazon.com: 2GB KIT (1GB x 2) Memory Upgrade for Apple PowerBook G4 1.67GHz 15" inch DDR2 PC2-5300 200 pin 667MHz SO-DIMM Non-ECC (PARTS-QUICK Brand) : Office Products