Item description from the sellerItem description from the seller
Williams Pinball Driver Board 100% TESTED AND BURNED IN. PLUG AND PLAY. THE RED FACTORY RESISTORS (LOWER RIGHT CORNER) REQUIRED FROM AN UPDATED BULLITEN BY WILLIAMS AND ARE INSTALLED BY OUR TECHNICIAN FOR SAFE OPERATION AND THE 40 PIN HEADER IS REPLACED WITH A FRESH UPDATED 40 PIN CONNECTOR FOR TROUBLE FREE OPERATION TO THE VITAL CONNECTION BETWEEN THE DRIVERBOARD AND THE MAIN COMPUTER BOARD.