ASROCK Rack C2550D4I User Manual download pdf (Page 28)

Though this motherboard provides a 4-Pin CPU fan (Quiet Fan)

connector, 3-Pin CPU fans can still work successfully even with-

out the fan speed control function. If you plan to connect a 3-Pin

CPU fan to the CPU fan connector on this motherboard, please

connect it to Pin 1-3.

3-Pin Fan Installation

Pin 1-3 Connected

ATX Power Connector

(24-pin ATXPWR1)

(see p.13 or 15, No. 1)

Please connect an ATX pow-

er supply to this connector.

20-Pin ATX Power Supply Installation

Though this motherboard provides a 24-pin ATX power connector,

it can still work if you adopt a traditional 20-pin ATX power supply.

To use a 20-pin ATX power supply, please plug your power supply

along Pin 1 and Pin 13.

1 12

13 24

1 12

13 24

Intelligent Platform

Management Bus header

(4-pin IPMB_1)

(see p.13 or 15, No. 24)

This 4-pin connector is used

to provide a cabled base-

board or front panel connec-

tion for value added features

and 3rd-party add-in cards,

such as Emergency Man-

agement cards, that provide

management features using

the IPMB.

IPMB_SDA

IPMB_SCL

GND

No connect

Non Maskable Interrupt

Button Header

(2-pin NMI_BTN1)

(see p.13 or 15, No. 21)

Please connect a NMI de-

vice to this header.

CONTROL

POWER

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 61 62

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ASROCK Rack C2550D4I User Manual Page 28

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