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Chapter 2: Motherboard information
CAUTION:
Do not forget to connect the fan cables to the fan connectors.
Insufficient air flow inside the system may damage the motherboard
components. These are not jumpers! Do not place jumper caps on the fan
connectors!
7.
CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN)
Connect the fan cables to the fan connectors on the motherboard, ensuring
that the black wire of each cable matches the ground pin of the connector.
CHA_FAN
GND 12V O_CHAFANIN_R O_CHAFAN_PWM_Q
A
A
CPU_FAN
GND 12V O_CPUFANIN_R O_CPUFAN_PWM_Q
B
B
Connector type
WAFER HD 4p, 2.54mm pitch, S/T
8.
Internal stereo speaker header (4-pin SPK_OUT)
The internal mono speaker header allows connection to an internal, low-
power speaker for basic system sound capability. The subsystem is capable
of driving a speaker load of 4 Ohms at 3 Watts (rms).
SPK_OUT
PIN 1
A_SPK_L- A_SPK_R-
Connector type
BOX WAFER HD 4P,S/T 2.0mm
