Asus B75M-PLUS - Manual (Page 24)

1-16 Chapter 1: Product introduction
• We recommend that you use an ATX 12V Specification 2.3-compliant power supply
unit (PSU) with a minimum of 300W power rating. This PSU type has 24-pin and 4-pin
power plugs.
• DO NOT forget to connect the 4-pin ATX +12V power plug. Otherwise, the system will
not boot up.
• We recommend that you use a PSU with higher power output when configuring a
system with more power-consuming devices or when you intend to install additional
devices. The system may become unstable or may not boot up if the power is
inadequate.
• If you are uncertain about the minimum power supply requirement for your system,
refer to the Recommended Power Supply Wattage Calculator at http://support.asus.
com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details.
3. 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.
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! The CPU_FAN connector supports a CPU fan of
maximum 2A (24 W) fan power.
• The CPU_FAN connector supports the CPU fan of maximum 1A (12W) fan power.
• Only the 4-pin fan supports the ASUS Fan Xpert feature.
B75M-PLUS
B75M-PLUS Fan connectors
CPU_FAN
CPU F
AN PWM
CPU F
AN IN
CPU F
AN PWR
GND
CHA_FAN
CHA
F
AN PWM
CHA
F
AN IN
CHA
F
AN PWR
GND