Asus B85-A R2.0 User Guide - Page 24

CPU and chassis fan connectors 4-pin CPU_FAN, 4-pin CHA_FAN1, USB 3.0 connector 20-1 pin USB3_12

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6. 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. B85-A R2.0 USB3_12 USB3+5V IntA_P2_SSRXIntA_P2_SSRX+ GND IntA_P2_SSTXIntA_P2_SSTX+ GND IntA_P2_DIntA_P2_D+ PIN 1 USB3+5V IntA_P1_SSRXIntA_P1_SSRX+ IntA_P1_SSTXGND IntA_P1_SSTX+ GND IntA_P1_DIntA_P1_D+ GND B85-A R2.0 USB3.0 Front panel connector The USB 3.0 module is purchased separately. 7. CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN1) 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. CPU_FAN CPU FAN PWM CPU FAN IN CPU FAN PWR GND B85-A R2.0 CHA_FAN1 +5V CHA FAN IN CHA FAN PWR GND B85-A R2.0 Fan connectors 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. 1-16 Chapter 1: Product introduction

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1-16
Chapter 1: Product introduction
7.
CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN1)
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.
B85-A R2.0
B85-A R2.0 Fan connectors
CHA_FAN1
+5V
CHA FAN IN
CHA FAN PWR
GND
CPU FAN PWM
CPU FAN IN
CPU FAN PWR
GND
CPU_FAN
6.
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-A R2.0
B85-A R2.0 USB3.0 Front panel connector
USB3_12
USB3+5V
IntA_P1_SSRX-
IntA_P1_SSRX+
IntA_P1_SSTX-
GND
IntA_P1_SSTX+
GND
IntA_P1_D-
IntA_P1_D+
GND
PIN 1
USB3+5V
IntA_P2_SSRX-
IntA_P2_SSRX+
GND
IntA_P2_SSTX-
IntA_P2_SSTX+
GND
IntA_P2_D-
IntA_P2_D+