Apple 205W Power Adapter Apple PowerMac G4 205W AC Power Supply. The charger is used, works normally, and its price is shown as used on Amazon in the pictures. Selling for 550 Riyals. The Apple Power Mac G4 205W charger is an external power adapter for the Power Mac G4 Cube (model M5849), designed to power the computer and provide power to the internal battery. It is usually sold on resale platforms like eBay and is a relatively rare part now. Basic information about the adapter: Full Name: Apple Power Mac G4 Cube Power Adapter Supply & Cable 205W. Part Number: You might find numbers like M5849 or 661-2455. Usage: To power the Power Mac G4 Cube. Market Status: Considered old and rare parts, sold in used markets or for replacement parts.