MACHINIST BTC-B250C - Fan Connectors (CPU_FAN1, SYS_FAN1); USB 2.0 Front Panel Connectors (JUSB2, JUSB4); USB 3.0 Front Panel Connector (FUSB3)

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CPU_FAN1, SYS_FAN1: Fan Connectors
CPU_FAN is a interface for CPU radiator. The 4pin fan has PWM intelligent speed regulation
function, which can intelligently control the fan speed based on load and temperature
changes.
SYS_FAN is the system cooling fan interface, which is generally connected to the case fan.
JUSB2, JUSB4: USB 2.0 Connectors
The headers conform to USB 2.0 specification. This connector allows you to connect USB 2.0
ports on the front panel.
FUSB3: USB 3.0 Connector
The header conforms to USB 3.0 and USB 2.0 specification. This connector allows you to
connect USB 3.0 ports on the front panel.