Foxconn H55MX-S Series User Manual page 24

Speaker Connector : SPeAKeR
The speaker connector is used to connect speaker of
the chassis.
Fan Connectors : CPU_FAN, SYS_FAN1/2
There are three main fan headers on this motherboard.
The fan speed can be controlled and monitored in "PC
Health Status" section of the BIOS Setup. These fans
can be automatically turned off after the system enters
3, S4 and S5 sleeping states.
CPU_FAN/SYS_FAN1/2
GND
1
POWER
SENSE
CONTROL
17
17
1
SPKJ
EMPTY
2
NC
3
4
SPKJ
SPEAKER