Star Micronics LC-8521 - Manual (Page 26)

18 Printer Setup
Connecting to your computer with a serial cable
The printer is equipped with a serial interface as standard. It does not come with
a cable, so you must separately purchase one that matches the needs of your
computer. You will probably want to use a standard serial (RS-232C) cable
when connecting to the printer’s serial interface.
The printer is also equipped with a parallel interface (page 16).
Important!
• The following instructions apply to the serial cable that is suitable for use
with an IBM-compatible personal computer. Note that they do not apply to
all types of computers and cables. If you are unsure about what type of
cable you should use, consult your dealer.
• Make sure that the printer is unplugged from the AC outlet and that the
computer is turned off before connecting them.