Asus B85-PRO - Manual (Page 24)

1-16 Chapter 1: Product introduction
6. CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN1/2)
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 1A (12 W) fan power.
CHA_FAN1
CH
A
FAN PWM
CH
A
FAN IN
CH
A
FAN PWR
GND
CPU_FAN
CPU
FAN PWM
CPU
FAN IN
CPU
FAN PWR
GND
CHA_FAN2
CHA FAN PWM
CHA FAN IN
CHA FAN PWR
GND
B85-PLUS
B85-PLUS Fan connectors
5. USB 3.0 connector (20-1 pin USB3_12)
This connector allows you to connect a USB 3.0 module for additional USB 3.0 front
or rear panel ports. With an installed USB 3.0 module, you can enjoy all the benefits of
USB 3.0 including faster data transfer speeds of up to 5Gbps, faster charging time for
USB-chargeable devices, optimized power efficiency, and backward compatibility with
USB 2.0.
The USB 3.0 module is purchased separately.
B85-PLUS
B85-PLUS USB3.0 Front panel connector
USB3_12
USB3+5V
USB3+5V