M5183 Power Mac G4 (PCI) Firewire Power Cable $10.00 Internal M5183 Power Mac G4 (PCI) Firewire Power Cable quantity Add to cart Add to Quote Continue Shopping Category: M5183 Power Mac G4 Graphite Description Internal, shielded Firewire Power Cable for the Apple Power Mac G4, PCI Graphics model. Apple 922-3709, 590-2143. Cable runs from the front control panel (power button) to the logic board.