Compatible with IBM OEM part numbres 31P9834, 31P9835, 10K0035, 10K0034, 33R4967 1GB 200pin PC2700 2.5V DDR333 SODIMM. This module uses the latest high density chips which draw less power and run cooler than other brands. This keeps you notebook running more stably. Genuine CMS brand, CMS is one of the most trusted names in the Computer Memory industry and this product carries a Lifetime Warranty from CMS Compatible with Apple PowerBook G4 M8793LL/A (1.0Ghz 17-inch) Apple PowerBook G4 M8980LL/A (1.0Ghz 15-inch) Apple PowerBook G4 M8981LL/A (1.25Ghz 15-inch) Apple PowerBook G4 M9110LL/A (1.33Ghz 17-inch) Apple PowerBook G4 M9183LL/A (1.33Ghz 12-inch) Apple PowerBook G4 M9184LL/A (1.33Ghz 12-inch) Apple PowerBook G4 M9421LL/A (1.33Ghz 15-inch) Apple PowerBook G4 M9422LL/A (1.5Ghz 15-inch) Apple PowerBook G4 M9462LL/A (1.5Ghz 17-inch) Apple PowerBook G4 M9676LL/A (1.5Ghz 15-inch) Apple PowerBook G4 M9677LL/A (1.67Ghz 15-inch) Apple PowerBook G4 M9689LL/A (1.67Ghz 17-inch) Apple PowerBook G4 M9690LL/A (1.5Ghz 12-inch) Apple PowerBook G4 M9691LL/A (1.5Ghz 12-inch) Apple PowerBook G4 M9793LL/A (1.0Ghz)