ASRock B85 Pro4 manual ATX Power Connector Pin ATXPWR1 See p.10, No

CPU Fan Connectors

(4-pin CPU_FAN1)

(see p.10, No. 26)

(3-pin CPU_FAN2) (see p.10, No. 27)

1GN D

2+ 12V

3CPU_ FAN_SPEED

4 FAN_SPEED_CONTROL

GND + 12V

CPU_ FAN_SPEED

This motherboard pro- vides a 4-Pin CPU fan (Quiet Fan) connector. If you plan to connect a 3-Pin CPU fan, please connect it to Pin 1-3.

This motherboard pro- vides a 24-pin ATX power connector. To use a 20-pin ATX power supply, please plug it along Pin 1 and Pin 13.

ATX 12V Power

Connector

(8-pin ATX12V1)

(see p.10, No. 2)

8

4

5

1

This motherboard pro- vides an 8-pin ATX 12V power connector. To use a 4-pin ATX power supply, please plug it along Pin 1 and Pin 5.

Infrared Module Header

(5-pin IR1)

(see p.10, No. 19)

IRTX +5VSB

DUMMY

1

GND

IRRX

This header supports an optional wireless transmitting and receiving infrared module.

Serial Port Header

(9-pin COM1)

(see p.10, No. 22)

RRXD1

DDTR#1

DDSR#1

CCTS#1

1

RRI#1

RRTS#1

GND

TTXD1

DDCD#1

This COM1 header supports a serial port module.