ASROCK B550M/ac Bedienungsanleitung

Version 1.0

Published May 2020

No part of this documentation may be reproduced, transcribed, transmitted, or

translated in any language, in any form or by any means, except duplication of

documentation by the purchaser for backup purpose, without written consent of

ASRock Inc.

Products and corporate names appearing in this documentation may or may not

be registered trademarks or copyrights of their respective companies, and are used

only for identication or explanation and to the owners’ benet, without intent to

infringe.

Disclaimer:

Specications and information contained in this documentation are furnished for

informational use only and subject to change without notice, and should not be

constructed as a commitment by ASRock. ASRock assumes no responsibility for

any errors or omissions that may appear in this documentation.

With respect to the contents of this documentation, ASRock does not provide

warranty of any kind, either expressed or implied, including but not limited to

the implied warranties or conditions of merchantability or tness for a particular

purpose.

In no event shall ASRock, its directors, ocers, employees, or agents be liable for

any indirect, special, incidental, or consequential damages (including damages for

loss of prots, loss of business, loss of data, interruption of business and the like),

even if ASRock has been advised of the possibility of such damages arising from any

defect or error in the documentation or product.

is device complies with Part 15 of the FCC Rules. Operation is subject to the following

two conditions:

(1) this device may not cause harmful interference, and

(2) this device must accept any interference received, including interference that

may cause undesired operation.

CALIFORNIA, USA ONLY

e Lithium battery adopted on this motherboard contains Perchlorate, a toxic substance

controlled in Perchlorate Best Management Practices (BMP) regulations passed by the

California Legislature. When you discard the Lithium battery in California, USA, please

follow the related regulations in advance.

“Perchlorate Material-special handling may apply, see www.dtsc.ca.gov/hazardouswaste/

perchlorate”

ASRock Website: http://www.asrock.com

AUSTRALIA ONLY

Our goods come with guarantees that cannot be excluded under the Australian

Consumer Law. You are entitled to a replacement or refund for a major failure and

compensation for any other reasonably foreseeable loss or damage caused by our

goods. You are also entitled to have the goods repaired or replaced if the goods fail

to be of acceptable quality and the failure does not amount to a major failure. If

you require assistance please call ASRock Tel : +886-2-28965588 ext.123 (Standard

International call charges apply)

e terms HDMI® and HDMI High-Denition Multimedia Interface, and the

HDMI logo are trademarks or registered trademarks of HDMI Licensing LLC in the

United States and other countries.

CE Warning

is device complies with directive 2014/53/EU issued by the Commision of the European

Community.

is equipment complies with EU radiation exposure limits set forth for an uncontrolled

environment.

is equipment should be installed and operated with minimum distance 20cm between

the radiator & your body.

Operations in the 5.15-5.35GHz band are restricted to indoor usage only.

Radio transmit power per transceiver type

Function Frequency Maximum Output Power (EIRP)

WiFi

2400-2483.5 MHz 18.5 + / -1.5 dbm

5150-5250 MHz 21.5 + / -1.5 dbm

5250-5350 MHz 18.5 + / -1.5 dbm (no TPC)

21.5 + / -1.5 dbm (TPC)

5470-5725 MHz 25.5 + / -1.5 dbm (no TPC)

28.5 + / -1.5 dbm (TPC)

Bluetooth 2400-2483.5 MHz 8.5 + / -1.5 dbm

English

B550M/ac

15 12

18 13

ATXPWR1

Super

I/O

CLRCMOS1

PCIE1

HD_AUDIO1

SOCKETAM4

F_USB3_1_2

CHA_FAN1/WP

RoHS

SPK_PLED1

DDR4_A1 (64 bit, 288-pin module)

DDR4_A2 (64 bit, 288-pin module)

DDR4_B1 (64 bit, 288-pin module)

DDR4_B2 (64 bit, 288-pin module)

PCIE2

PCIE3

HDLED RESET

PLED PWRBTN

PANEL1

M2_1

AMD

Promontory

B550

USB_3_4

CPU_FAN1

CHA_FAN4/WP

USB_5_6

ATX12V1

ADDR_LED1

RGB_LED1

SATA3_1

SATA3_2

SPI_TPM_J1

F_USB3_3_4

CHA_FAN2

/WP

RGB_LED2

ADDR_LED2

CMOS

Battery

LAN

AUDIO

CODEC

22 17

CPU

DRAM

VGA

BOOT

M2_3

NUT1

COM1

B550M/ac

Top:

LIN E IN

Center:

FRONT

Bottom:

MIC IN

RJ-45 LAN

USB 3.2 Gen1

T: USB3

B: USB4

USB 3.2 Gen1

T: USB1

B: USB2

USB 2.0

T: USB1

B: USB2

PS2

Keyboard/

Mouse

HDMI1

WiFi-802.11ac

Module

SATA3_4

SATA3_3

Motherboard Layout

English

No. Description

1 8 pin 12V Power Connector (ATX12V1)

2 CPU Fan Connector (CPU_FAN1)

3 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)

4 2 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)

5 RGB LED Header (RGB_LED1)

6 Addressable LED Header (ADDR_LED1)

7 ATX Power Connector (ATXPWR1)

8 USB 3.2 Gen1 Header (F_USB3_1_2)

9 SATA3 Connector (SATA3_2)

10 SATA3 Connector (SATA3_1)

11 SATA3 Connector (SATA3_4)(Upper), SATA3 Connector (SATA3_3)(Lower)

12 System Panel Header (PANEL1)

13 Power LED and Speaker Header (SPK_PLED1)

14 USB 3.2 Gen1 Header (F_USB3_3_4)

15 Chassis/Water Pump Fan Connector (CHA_FAN4/WP)

16 Post Status Checker (PSC)

17 SPI TPM Header (SPI_TPM_J1)

18 USB 2.0 Header (USB_3_4)

19 USB 2.0 Header (USB_5_6)

20 Chassis/Water Pump Fan Connector (CHA_FAN2/WP)

21 Clear CMOS Jumper (CLRCMOS1)

22 COM Port Header (COM1)

23 Addressable LED Header (ADDR_LED2)

24 RGB LED Header (RGB_LED2)

25 Front Panel Audio Header (HD_AUDIO1)

26 Chassis/Water Pump Fan Connector (CHA_FAN1/WP)

English

B550M/ac

I/O Panel

No. Description No. Description

1 USB 2.0 Ports (USB_12)* 6 USB 3.2 Gen1 Ports (USB3_34)

2 LAN RJ-45 Port** 7 USB 3.2 Gen1 Ports (USB3_12)

3 Line In (Light Blue)*** 8 PS/2 Mouse/Keyboard Port

4 Front Speaker (Lime)*** 9 HDMI Port

5Microphone (Pink)*** 10 Antenna Ports

* Please note that the USB_2 consumes auxiliary power (+5VSB) while the other USB ports consume DUAL

Power (+5VDUAL). e USB_2 is optimal for connecting the USB Type speaker and headset.

** ere are two LEDs on each LAN port. Please refer to the table below for the LAN port LED indications.

Activity / Link LED Speed LED

Status Description Status Description

O No Link O 10Mbps connection

Blinking Data Activity Orange 100Mbps connection

On Link Green 1Gbps connection

ACT/LINK LED

SPEED LED

LAN Port

6789

1 2 4

10 5

English

*** Function of the Audio Ports in 7.1-channel Conguration:

Port Function

Light Blue (Rear panel) Rear Speaker Out

Lime (Rear panel) Front Speaker Out

Pink (Rear panel) Central /Subwoofer Speaker Out

Lime (Front panel) Side Speaker Out

English

B550M/ac

WiFi-802.11ac Module and ASRock WiFi 2.4/5 GHz Antennas

WiFi-802.11ac + BT Module

is motherboard comes with an exclusive WiFi 802.11 a/b/g/n/ac + BT v4.2 module

that oers support for WiFi 802.11 a/b/g/n/ac connectivity standards and Bluetooth

v4.2. WiFi + BT module is an easy-to-use wireless local area network (WLAN) adapter

to support WiFi + BT. Bluetooth v4.2 standard features Smart Ready technology that

adds a whole new class of functionality into the mobile devices. BT 4.2 also includes

Low Energy Technology and ensures extraordinary low power consumption for PCs.

* e transmission speed may vary according to the environment.

English

WiFi Antennas Installation Guide

Step 1

Prepare the WiFi 2.4/5 GHz Antennas that come

with the package.

Step 2

Connect the two WiFi 2.4/5 GHz Antennas to

the antenna connectors. Turn the antenna clock-

wise until it is securely connected.

Step 3

Set the WiFi 2.4/5 GHz Antenna as shown in the

illustration.

*You may need to adjust the direction of

the antenna for a stronger signal.

Chapter 1 Introduction

ank you for purchasing ASRock B550M/ac motherboard, a reliable motherboard

produced under ASRock’s consistently stringent quality control. It delivers excellent

performance with robust design conforming to ASRock’s commitment to quality

and endurance.

1.1 Package Contents

• ASRock B550M/ac Motherboard (Micro ATX Form Factor)

• ASRock B550M/ac Quick Installation Guide

• ASRock B550M/ac Support CD

• 1 x I/O Panel Shield

• 2 x Serial ATA (SATA) Data Cables (Optional)

• 2 x ASRock WiFi 2.4/5 GHz Antennas (Optional)

• 1 x Screw for M.2 Socket (Optional)

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