MPU011A- This completely redesigned board replaces Williams System 11A & 11B MPU / Driver Boards part number D-11883-xxx (where xxx is the game number).
The Alltek Ultimate MPU is a direct replacement for Bally® and Stern® pinball machine boards. Features include preprogrammed games, freeplay mode, no batteries needed, and easy installation. Lifetime warranty.
Spin, Inc. - Quality gaming machines & equipment.-Board, MPU Board HSG.W/QUARD VID. Bally Alpha 2 PRO
MPU SETUP INO - Pinball Electronics from barakandl
Alltek Universal Replacement MPU Bally/Stern
Alltek Systems Ultimate MPU Board Normal Start-Up Sequence - YouTube