Gefen EXT-DP-441 - Manual (Page 17)

RS-232 CONTROL
14
Only pins 2 (Receive), 3 (Transmit), and 5 (Ground) are used for communication.
A null-modem adapter should not be used with this product.
5 4 3 2 1
9 8 7 6
1 2 3 4 5
6 7 8 9
Only Pins 2 (RX), 3 (TX), and 5 (Ground) are used on the RS-232 serial interface
Serial Port Settings
Bits per second ............................................................................................ 19200
Data bits ............................................................................................................... 8
Parity ............................................................................................................. None
Stop bits ................................................................................................................1
Flow Control .................................................................................................. None
NOTE: Only pins 2 (Receive), 3 (Transmit), and 5 (Ground) are
used for communication. A null-modem adapter should not be
used with this product.