Cable Connections
HP Pro 3120
System board connectors are color-coded to make it easier to find the proper connection.
Connector Name Connector Color Description
ATX PWR white Power supply, 24-pin
ATX_CPU white Power supply, 4-pin
CHASSIS_FAN1 brown Chassis fan
CPU_FAN white Heat sink fan
F_USB2 black Media card reader
J_PANEL black Power switch
FRNT AUD yellow Front I/O audio
F_USB1 white Front I/O USB
SATA1 dark blue Primary hard drive
SATA2 white Primary optical drive
SATA3 light blue Second hard drive
SATA4 orange Second optical drive
HP Pro 3125
System board connectors are color-coded to make it easier to find the proper connection.
Connector Name Connector Color Description
P15 white Power supply, 24-pin
PU521 white Power supply, 4-pin
SYS_FAN brown Chassis fan
CPU_FAN white Heat sink fan
J18 black Power switch
F_AUDIO yellow Front I/O audio
F_USB1 white Front I/O USB
F_USB3 white Media card reader
SATA1 dark blue Primary hard drive
SATA2 white Primary optical drive
SATA3 light blue Second hard drive
SATA4 orange Second optical drive
Cable Management
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