Toshiba 650CT Maintenance Manual page 220

F.4 Serial Port Direct Cable (9-Pin to 25-Pin)
(1) CD
(2) RD
(3) TD
(4) DTR
(5) GND
(7) RTS
(6) DSR
(8) CTS
(9) RI
Figure F-4 Serial port direct cable (9-pin to 25-pin)
F-2
(4) RTS
(2) TD
(3) RD
(5) CTS
(6) DSR
(22) RI
(7) GND
(8) CD
(20) DTR
650CT