Epson Equity Ie Q50188015-1 - Manual (Page 20)

4. Connect the other end of the cable to the printer as shown in the
following illustration. To secure the cable, squeeze the clips at each side
of the printer connector and push them into place.
5. Plug the printer’s power cable into an electrical outlet.
Connecting to the serial interface
If you have a printer (or another peripheral such as a modem) with a
serial interface, connect it to the serial (RS232C) port at the back of the
main unit.
serial port
Setting Up Your System