TANDY 2500 RSX (250-1620/1621) Math Coprocessor Faxback Doc. # 1912 The math coprocessor socket is located on the main logic board: CAUTION: Incorrect installation of the math coprocessor can cause electrical damage to the main logic board or the coprocessor. The computer requires a 25 MHz 387SX math coprocessor. Read the instructions in this section before you install your math coprocessor. CAUTION: Touch a grounded metal object before handling electrical components. 1. Orient the math coprocessor so that the notched corner of the coprocessor aligns with the notched corner of the socket: 2. Taking care not to bend or touch the metal pins, press the coprocessor into the socket. 3. Run the setup utility and press F2 to save the new system configuration.