User`s guide

2-8 KEEX-2010 Series User Guide
X RS232/422/485 Serial Port Connector (COM2: 5x2 box header
2.54mm pitch):
PIN SIGNAL PIN SIGNAL
1
RS-232：DCD
RS-422：TX+
RS-485：RTX+
2
RS-232：RXD
RS-422：RX+
RS-485：N/A
3
RS-232：TXD
RS-422：TX-
RS-485：RTX-
4
RS-232：DTR
RS-422：RX-
RS-485：N/A
5
GND
6
DSR
7
RTS
8
CTS
9
RI
10
NC
9
8
4
1
3
6
2
7
10
5
Table 2-10. COM2 RS232/422/485 Serial Port Connector pin definition
X CPU Fan Connector (FAN1: Wafer 2.54mm. pitch):
PIN SIGNAL
1 Ground
2 +5V
3 Speed Sense
3
1
2
Table 2-11. CPU Fan Connector pin definition
X Front Panel 1 Pin Header (FP1: 4x2-pin 2.54mm pitch):
PIN SIGNAL PIN SIGNAL
1 Reset Button + 2 Speaker +
3 Reset Button - 4 NC
5 HDD LED + 6 NC
7 HDD LED - 8 Speaker -
Pins 2, 8: External Speaker wire
Pins 6-8 shorted: Internal S
p
eaker Enable
(
default
)
Table 2-12. Front Panel 1 Pin Header pin definition