M5183 Power Mac G4 PCI Front Panel Board – Power Button – Switch $20.00 Control panel for power switch M5183 Power Mac G4 PCI Front Panel Board - Power Button - Switch quantity Add to cart Add to Quote Continue Shopping Category: M5183 Power Mac G4 Graphite Description Front Panel Board assembly, or power button / switch for the Apple Power Mac G4, PCI Graphics model. Apple 922-3852, 630-2878. Includes Shield.