NEXCOM NEX 611 User Manual
Page 25
Copyright © 2011 NEXCOM International Co., Ltd. All Rights Reserved.
14
Chapter 2: Installation
NEX 611 User Manual
CPU Fan Connector
(4-pin CPU_FAN1)
(see p.10, No.7)
Though this motherboard provides a 4-Pin CPU fan (Quiet Fan) connector,
3-Pin CPU fans can still work successfully even without fan speed control.
If you plan to connect a 3-Pin CPU fan, please connect it to Pin 1-3.
Serial Port Header
(9-pin COM3)(see p.10, No.18)
(9-pin COM4)(see p.10, No.19)
(9-pin COM5)(see p.10, No.23)
(9-pin COM6)(see p.10, No.22)
These COM headers support serial port modules.
FAN_SPEED
FAN_SPEED_CONTROL
GND
+12V
1
2
3
4
Pin
Signal Name
Pin
Signal Name
1
GND
2
+12V
3
FAN_SPEED
4
FAN_SPEED_CONTROL
CCTS#1
RRTS#1
DDSR#1
DDTR#1
RRXD1
GND
TTXD1
DDCD#1
1
RRI#1
Pin
Signal Name
Pin
Signal Name
1
DDCD#1
2
TTXD1
3
GND
4
RRTS#1
5
RRI#1
6
RRXD1
7
DDTR#1
8
DDSR#1
9
CCIS#1