Wireless Antenna for Power Mac G4 AGP, Gigabit, and maybe more models. Pictured first is the antenna from an AGP model - it sits at the top under the handle - included are the 2 screws for mounting. Center photo is from a Gigabit model. It runs underneath the computer to each side, all hardware included. Last photo is from a Power Mac G4 MDD, 820-1336 is printed on the board.