Table 2-10. Com2 Rs232/422/485 Serial Port Connector Pin Definition; Table 2-11. Cpu Fan Connector Pin Definition; Table 2-12. Front Panel 1 Pin Header Pin Definition - Quanmax KEEX-2010 User Manual

RS232/422/485 Serial Port Connector (COM2: 5x2 box header
2.54mm pitch):
PIN
1
3
5
7
9
CPU Fan Connector (FAN1: Wafer 2.54mm. pitch):
Front Panel 1 Pin Header (FP1: 4x2-pin 2.54mm pitch):
PIN
1
3
5
7
Pins 2, 8: External Speaker wire
Pins 6-8 shorted: Internal Speaker Enable (default)
2-8 KEEX-2010 Series User Guide
SIGNAL PIN
RS-232：DCD
RS-422：TX+
RS-485：RTX+
RS-232：TXD
RS-422：TX-
RS-485：RTX-
GND
RTS
RI

Table 2-10. COM2 RS232/422/485 Serial Port Connector pin definition

PIN SIGNAL
1 Ground
2 +5V
3 Speed Sense

Table 2-11. CPU Fan Connector pin definition

SIGNAL PIN
Reset Button + 2
Reset Button - 4
HDD LED + 6
HDD LED - 8

Table 2-12. Front Panel 1 Pin Header pin definition

SIGNAL
RS-232：RXD
2
RS-422：RX+
RS-485：N/A
RS-232：DTR
4
RS-422：RX-
RS-485：N/A
DSR
6
CTS
8
NC
10
SIGNAL
Speaker +
NC
NC
Speaker -
1 2
3 4
5 6
7 8
9 10
1
2
3