Using The Serial Interface - Epson CW3S16 Operation Manual

3. Connect the other end of the cable to the printer, as
shown below. If the printer has retaining clips on each side
of the printer port, squeeze the clips together to secure the
cable.
4. Plug the printer's power cord into an electrical outlet.

Using the Serial Interface

If you have a serial printer, modem, mouse, or any other
peripheral with a serial interface, you can connect it to one of
two serial (RS-232C) ports on the back of the computer. Your
computer uses IBM-compatible, 9-pin, male connector, so be
sure you have the proper cable. If you are not sure which one
you need, or whether you have the right one, check with the
store where you bought the cable.
To connect a serial device, follow the same steps outlined
above for a parallel device, but connect the cable to the serial
port, shown below.
Figure 1-4. Serial Port
Setting Up Your System
1-7