The Lynxmotion PS2 Receiver Carrier EC-03 allows you to mount a manufacturer PS2 receiver above other manufacturer electronics such as the BotBoarduino. The kit includes all the hardware needed as well as four tapping screws which replace the four existing screws on the PS2 receiver. Slots in the Lexan allow the board to be used with other electronics. Receiver not included. It includes 4 x 1'' M/F Hex spacers, 4 x 4 - 40 x 3/8'' screws and 4 x tapping screws. Remove the existing four screws from your PS2 receiver and thread the new screws through the board and into the receiver.