High End Systems High End LCD Controller for Studio Color - Manual (Page 176)

7-14 IBM-Compatible Studio Color LCD Controller
You can use a DB9 to DB25 adapter if the female end of your
serial cable does not match your computer’s serial port.
Make sure you do not use a null modem adapter, since that
will prevent the controller from communicating with your
computer.
Connecting the Computer and Controller
Figure 7-2 shows two different connections. The top diagram
shows how to connect a PC with a DB9 serial port to the
controller using a standard DB9-to-DB9 cable. The bottom
diagram shows how to connect a PC with a DB25 serial port
to the controller using a standard DB25-to-DB25 cable and a
DB25-to-DB9 adapter:
Figure 7-2. Connecting PCs with either a DB9 or a
DB25 serial port to the controller for download/
upload.
DB9 to DB25 Adapter
Female DB25
connector Male DB9
connector
Standard serial cable
(DB9 to DB9) Controller RS-232C port Male DB9 serial port
Computer with DB9 serial port
Standard serial cable
(DB25 to DB25)
Male DB25 serial port
Controller RS-232C port
DB25 (female) to
DB9 (male) adapter
Computer with DB25 serial port