The CueServer Pro (CS-800) has an RS-232 port available for connecting to external equipment. The jack on the back of CueServer is a Female DB-9 type connector.
Transmit Data from CueServer
Receive Data to CueServer
Optional +5V Power Output
By default, Pin 9 is not internally connected (n/c). If desired, Pin 9 can be configured to output +5V DC by shorting a jumper on the CueServer Pro PCB immediately behind the DB-9 jack. This jumper is labelled "5V-P9" on the PCB.