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2. Connect the serial cable to the COM 1 or COM 2 port.
3. If the connector has retaining screws, tighten them by hand
or with a screwdriver.
4. Connect the other end of the cable to the serial device. If the
connector has retaining screws, tighten them.
5. Connect the serial device’s power cable (if it has one) to a
grounded (earthed) electrical socket.
Check the documentation that came with your serial device to see
if any other steps are necessary.
4-6 Connecting Optional Devices