Apple Modem Cable RJ-11 Apple Rescue of Denver » Products Page » G3 to G5 » Cables & Adapters (G3 to G5) » Apple Modem Cable RJ-11 New! Apple 591-0075. Modem Cable from the G4 era, but should will work with any modem using a RJ-11 (telephone cable) port. Product not in stock Price: $5.00 This product has sold out. Updating...