Epson 24-PIN DOT MATRIX PRINTER LQ-570+ - Manual (Page 33)

1. Make sure both the printer and computer are turned off; then
plug the cable connector securely into the parallel
interface connector. Squeeze the wire clips together until
they lock in place on either side of the connector.
Note:
If your has a it to the
2. Plug the other end of the cable into the computer. there is
a ground wire at the computer end of the cable, attach it to
the connector at the back of the computer.)
Setting Up the Printer 1-13