Konica Minolta QMS magicolor CX Reference - Manual (Page 139)

Options,
Accessories,
and
Replacement
3-5 Technical Specifications
Options, Accessories, and
Replacement Parts
See chapter 2, “Options” of this manual for a list of available printer
options, accessories, and replacement parts.
Pinout and Cable
Specifications
Serial Pinouts
This table gives the pinouts for the printer’s 9-pin RS-232 interface
port.
Pin Name
1 Not Used
2 Receive Data (RXD)
3 Transmit Data (TXD)
4 Data Terminal Ready (DTR)
5 Signal Ground (GND)
6 Data Set Ready (DSR)
7 Ready To Send (RTS)
8 Clear To Send (CTS)
9 Reserved