3. Front Panel Connectors
3.1 Keyboard and Mouse
The keyboard / mouse connectors are 6-pin female mini-DIN connectors using the industry standard pinout.
1 Data
2 NC
3 Ground
4 +5V
5 Clock
6 NC
3.2 Ethernet
The Ethernet connector is a 8-pin RJ-45 jack using the industry-standard pinout for 100BaseT.
3.3 Serial ports
Serial ports 1 and 2 are implemented with 9-pin male Dsub connectors. Each connector has the following pinout.
The RS-232 pinout is industry-standard DTE, while the RS-422/485 pinouts are DSC standard
Pin
RS-232
RS-422
(ports 3-4 only)
RS-485
(ports 3-4 only)
1
DCD
NC
NC
2
RXD
TXD+
TX/RX+
3
TXD
Ground
Ground
4
DTR
RXD+
NC
5
Ground
Ground
Ground
6
DSR
NC
NC
7
RTS
TXD-
Tx/RX-
8
CTS
RXD-
NC
9
RI
NC
NC
3.4 USB
The 4 USB connectors use the industry standard pinout. The connector shield is connected to the shield pins of the
CPU connectors. Ports 0 and 1 connect to the combination USB/Ethernet connector. Ports 2 and 3 go to a 2-port
USB connector on the panel and a 2x5 pin header for internal use (see above).
1 Pwr +
2 Data -
Diamond Systems Corporation
Poseidon User Manual
Page 110