Asrock B550 Phantom Gaming 4/ac Quick Installation Guide

Version 1.0
Published May 2020
Copyright©2020 ASRock INC. All rights reserved.

Copyright Notice:

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

: [phone] 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)

2400-2483.5 MHz 18.5 + / -1.5 dbm

5150-5250 MHz 21.5 + / -1.5 dbm

WiFi

Bluetooth 2400-2483.5 MHz 8.5 + / -1.5 dbm

5250-5350 MHz

5470-5725 MHz

18.5 + / -1.5 dbm (no TPC)

21.5 + / -1.5 dbm (TPC)

25.5 + / -1.5 dbm (no TPC)

28.5 + / -1.5 dbm (TPC)

Motherboard Layout

DDR 4_A2 (6 4 bit, 28 8-pin m odule )

DDR 4_A1 (6 4 bit, 28 8-pin m odule )

DDR 4_B2 (6 4 bit, 28 8-pin m odule )

DDR 4_B1 (6 4 bit, 28 8-pin m odule )

ATX12V1

ATXP WR 1

PCIE3

HDLED RESET

PLED PWRBTN

PANEL1

1

USB_3_4

1

1

SPK_PLED1

1

HD_AUDIO1

PCIE1

RoHS

13

17

2

Hyper M.2

PCIe Gen4 x4

CMOS

Battery

PCIE2

12

9

USB3_ 7_8

10

SATA3_4

SATA3_3

CLRCMOS1

1

3

PCIE4

AUDIO
CODEC

SUPER

I/O

18

20

2122

28

19

6

5

CHA_FAN3/WP

CHA_FAN1/WP

CPU_FAN2/WP

ATX12V2

CPU_FAN1

4

1

16

ADDR_LED1

1

RGB_LED1

1

26

ADDR_LED2

1

RGB_LED2

1

7

8

29

CPU

DRAM

VGA

BOOT

USB 3.2 Ge n1

T: USB3_1

B: USB3_ 2

Top:
RJ-45

USB 3.2 Gen1
T: USB3_5
B: USB3_6

PS2

Keybo ard

/Mous e

Top:

LINE I N

Cent er:

FRON T

Bott om:

MIC IN

USB_1_2

1

27

SOCKETAM4

15

14

SATA3_2

SATA3_1

COM1

1

23

CHA_FAN2/WP

M2_1

C 3

C 2

T

T

C 4

T

C 1

T

25

24

CHA_FAN4/WP

USB 3.2 Gen1
T: USB3_3
B: USB3_4

HDMI 1

1

SPI_TPM_J1

11

AMD

B550

M2_2

M2_WIFI_CT1

WiFi-802.11ac

Module

B550 Phantom Gaming 4/ac

English

1

No. Description

1 CPU Fan / Waterpump Fan Connector (CPU_FAN2/WP)

2 ATX 12V Power Connector (ATX12V1)

3 ATX 12V Power Connector (ATX12V2)

4 CPU Fan Connector (CPU_FAN1)

5 2 x 288-pin DDR4 DIMM Slots (DDR4_A1, DDR4_B1)

6 2 x 288-pin DDR4 DIMM Slots (DDR4_A2, DDR4_B2)

7 RGB LED Header (RGB_LED2)

8 Addressable LED Header (ADDR_LED2)

9 ATX Power Connector (ATXPWR1)

10 USB 3.2 Gen1 Header (USB3_7_8)

11 SPI TPM Header (SPI_TPM_J1)

12 SATA3 Connector (SATA3_3)

13 SATA3 Connector (SATA3_4)

14 SATA3 Connector (SATA3_1)

15 SATA3 Connector (SATA3_2)

16 Post Status Checker (PSC)

17 System Panel Header (PANEL1)

18 Power LED and Speaker Header (SPK_PLED1)

19 Chassis Fan / Waterpump Fan Connector (CHA_FAN1/WP)

20 Clear CMOS Jumper (CLRCMOS1)

21 USB 2.0 Header (USB_3_4)

22 USB 2.0 Header (USB_1_2)

23 Chassis Fan / Waterpump Fan Connector (CHA_FAN2/WP)

24 Chassis Fan / Waterpump Fan Connector (CHA_FAN4/WP)

25 Addressable LED Header (ADDR_LED1)

26 RGB LED Header (RGB_LED1)

27 COM Port Header (COM1)

28 Front Panel Audio Header (HD_AUDIO1)

29 Chassis Fan / Waterpump Fan Connector (CHA_FAN3/WP)

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I/O Panel

1

B550 Phantom Gaming 4/ac

3

2

4

10

9

8

7

6

No. Description No. Description

1 PS/2 Mouse/Keyboard Port 6 USB 3.2 Gen1 Ports (USB3_5_6)

2 LAN RJ-45 Port* 7 USB 3.2 Gen1 Ports (USB3_3_4)

3 Line In (Light Blue)** 8 Antenna Ports

4 Front Speaker (Lime)** 9 HDMI Port

5 Microphone (Pink)** 10 USB 3.2 Gen1 Ports (USB3_1_2)

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

ACT/LINK LED

SPEED LED

LAN Por t

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

5

** 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

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3

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.

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WiFi Antennas Installation Guide

B550 Phantom Gaming 4/ac

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 clock­wise 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.

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5

Chapter 1 Introduction

ank you for purchasing ASRock B550 Phantom Gaming 4/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.

Becau se the motherboard specications and the BIOS soware might be updated, the
content of this manual will be subject to change without notice. In ca se any modica­tions of this manual occur, the updated version will be available on ASRock’s website
without further notice. If you require technical suppor t related to this motherboard,
please visit our website for spe cic information about the model you are using. You
may nd the l atest VGA cards and CPU support list on ASRock’s website a s well.
ASRock website http://www.asrock.com.

1.1 Package Contents

ASRock B550 Phantom Gaming 4/ac Motherboard (ATX Form Factor)

•

ASRock B550 Phantom Gaming 4/ac Quick Installation Guide

•

ASRock B550 Phantom Gaming 4/ac Support CD

•

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)

•

1 x I/O Panel Shield

•

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1.2 Specications

Platform

CPU

Chipset

Memory

•

•

•

•

* Not compatible with AMD Athlon™ Processors.

•

•

•

•

•

•

•

* Please refer to Memory Support List on ASRock's website for
more information. (http://www.asrock.com/)

* Please refer to page 23 for DDR4 UDIMM maximum frequency
support.

•

•

•

B550 Phantom Gaming 4/ac

ATX Form Factor
Solid Capacitor design
2oz Copper PCB

Supports AMD AM4 Socket Ryzen™ 3000, 3000 G-Series,
4000 G-Series, 5000 and 5000 G-Series Desktop Processors*

Digi Power design
8 Power Phase design

AMD B550

Dual Channel DDR4 Memory Technology
4 x DDR4 DIMM Slots

AMD Ryzen series CPUs (Matisse) support DDR4 4533+(OC)
/4466(OC)/4400(OC)/4333(OC)/4266(OC)/4200(OC)/
4133(OC)/4000(OC)/3866(OC)/3800(OC)/3733(OC)/
3600(OC)/3466(OC)/3200/2933/2667/2400/2133 ECC & non­ECC, un-buered memory*
AMD Ryzen series APUs (Renoir) support DDR4 4733+(OC)
/4666(OC)/4600(OC)/4533(OC)/4466(OC)/4400(OC)/4333
(OC)/4266(OC)/4200(OC)/4133(OC)/4000(OC)/3866(OC)/
3800(OC)/3733(OC)/3600(OC)/3466(OC)/3200/2933/2667­/2400/2133 ECC & non-ECC, un-buered memory*

Max. capacity of system memory: 128GB
Supports Extreme Memory Prole (XMP) memory modules
15μ Gold Contact in DIMM Slots

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Expansion
Slot

AMD Ryzen series CPUs (Matisse)

2 x PCI Express x16 Slots (PCIE1: Gen4x16 mode; PCIE3:

•

Gen3 x4 mode)*

AMD Ryzen series APUs (Renoir)

2 x PCI Express x16 Slots (PCIE1: Gen3x16 mode; PCIE3:

•

Gen3 x4 mode)*

* Supports NVMe SSD as boot disks

2 x PCI Express 3.0 x1 Slots

•

Supports AMD Quad CrossFireXTM and CrossFireX

•

1 x M.2 Socket (Key E) with the bundled WiFi-802.11ac

•

module

TM

English

Graphics

Audio

Integrated AMD Radeon

•

TM

Vega Series Graphics in Ryzen

Series APU*

* Actual support may vary by CPU

DirectX 12, Pixel Shader 5.0

•

Shared memory default 2GB. Max Shared memory supports

•

up to 16GB.
* e Max shared memory 16GB requires 32GB system memory
installed.

Supports HDMI 2.1 with max. resolution up to 4K x 2K

•

(4096x2160) @ 60Hz

Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and

•

HBR (High Bit Rate Audio) with HDMI 2.1 Port

(Compliant HDMI monitor is required)

Supports HDR (High Dynamic Range) with HDMI 2.1

•

Supports HDCP 2.3 with HDMI 2.1 Port

•

Supports 4K Ultra HD (UHD) playback with HDMI 2.1 Port

•

Supports Microso PlayReady®

•

7.1 CH HD Audio with Content Protection (Realtek ALC1200

•

Audio Codec)

Premium Blu-ray Audio support

•

Supports Surge Protection

•

PCB Isolate Shielding

•

Individual PCB Layers for R/L Audio Channel

•

Nahimic Audio

•

8

LAN

Wireless
LAN

Rear Panel
I/O

B550 Phantom Gaming 4/ac

PCIE x1 Gigabit LAN 10/100/1000 Mb/s

•

Realtek RTL8111H

•

Supports Wake-On-LAN

•

Supports Lightning/ESD Protection

•

Supports Energy Ecient Ethernet 802.3az

•

Supports PXE

•

Intel® 802.11ac WiFi Module

•

Supports IEEE 802.11a/b/g/n/ac

•

Supports Dual-Band (2.4/5 GHz)

•

Supports high speed wireless connections up to 433Mbps

•

Supports Bluetooth 4.2 + High speed class II

•

2 x Antenna Ports

•

1 x PS/2 Mouse/Keyboard Port

•

1 x HDMI Port

•

6 x USB 3.2 Gen1 Ports (Supports ESD Protection)

•

1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED

•

LED)
HD Audio Jacks: Line in / Front Speaker / Microphone

•

Storage

4 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0,

•

RAID 1 and RAID 10), NCQ, AHCI and Hot Plug
1 x Hyper M.2 Socket (M2_1), supports M Key type

•

2260/2280/22110 M.2 PCI Express module up to Gen4x4 (64

Gb/s) (with Matisse) or Gen3x4 (32 Gb/s) (with Renoir)*
* Supports NVMe SSD as boot disks
* Supports ASRock U.2 Kit

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9

Connector

1 x COM Port Header

•

1 x SPI TPM Header

•

1 x Power LED and Speaker Header

•

2 x RGB LED Headers

•

* Support in total up to 12V/3A, 36W LED Strip

2 x Addressable LED Headers

•

* Support in total up to 5V/3A, 15W LED Strip

1 x CPU Fan Connector (4-pin)

•

* e CPU Fan Connector supports the CPU fan of maximum
1A (12W) fan power.

1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan

•

Speed Control)
4 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan

•

Speed Control)
* e Chassis/Water Pump Fan supports the water cooler fan of
maximum 2A (24W) fan power.
* CPU_FAN2/WP, CHA_FAN1/WP, CHA_FAN2/WP, CHA_
FAN3/WP and CHA_FAN4/WP can auto detect if 3-pin or 4-pin
fan is in use.

1 x 24 pin ATX Power Connector

•

1 x 8 pin 12V Power Connector

•

1 x 4 pin 12V Power Connector

•

1 x Front Panel Audio Connector

•

2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD

•

Protection)

1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports)

•

(Supports ESD Protection)

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10

BIOS
Feature

AMI UEFI Legal BIOS with GUI support

•

Supports “Plug and Play”

•

ACPI 5.1 compliance wake up events

•

Supports jumperfree

•

SMBIOS 2.3 support

•

CPU, CPU VDDCR_SOC, DRAM, VPPM, 1.05V_PROM_S5,

•

2.5V_PROM, +1.8VSB, VDDP Voltage Multi-adjustment

Temperature Sensing: CPU, CPU/Water Pump, Chassis/Wa-

Hardware
Monitor

•

ter Pump Fans
Fan Tachometer: CPU, CPU/Water Pump, Chassis/Water

•

Pump Fans
Quiet Fan (Auto adjust chassis fan speed by CPU tempera-

•

ture): CPU, CPU/Water Pump, Chassis/Water Pump Fans
Fan Multi-Speed Control: CPU, CPU/Water Pump, Chassis/

•

Water Pump Fans
Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore, CPU VD-

•

DCR_SOC, DRAM, VPPM, 1.05V_PROM_S5, +1.8V, VDDP

Microso® Windows® 10 64-bit

OS

Certica­tions

* For detailed product information, please visit our website: http://www.asrock .com

Please realize that the re is a certain risk involved with overclocking, including adjust­ing the setting in the BIOS, applying Untied Ove rclocking Technology, or using third­party overclocking tools. Overclocking may aect your system’s stability, or even cause
damage to the components and devices of your system. It should be done at your own
risk and expense. We are not responsible for possible damage cau sed by overclocking.

•

FCC, CE

•

ErP/EuP ready (ErP/EuP ready power supply is required)

•

B550 Phantom Gaming 4/ac

11

English

Chapter 2 Installation

is is an ATX form factor motherboard. Before you install the motherboard, study
the conguration of your chassis to ensure that the motherboard ts into it.

Pre-installation Precautions

Take note of the following precautions before you install motherboard components
or change any motherboard settings.

Make sure to unplug the power cord before installing or removing the motherboard.

•

Failure to do so may cause physical injuries to you and damages to motherboard
components.
In order to avoid damage from static electricity to the motherboard’s components,

•

NEVER place your motherboard directly on a carpet. Also remember to use a grounded
wrist strap or touch a safety grounded object before you handle the components.
Hold components by the edges and do not touch the ICs.

•

Whenever you uninstall any components, place them on a grounded anti-static pad or

•

in the bag that comes with the components.
When placing screws to secure the motherboard to the chassis, please do not over-

•

tighten the screws! Doing so may damage the motherboard.

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12

2.1 Installing the CPU

Unplug all power cables be fore installing the CPU.

1

B550 Phantom Gaming 4/ac

2

English

13

3

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14

B550 Phantom Gaming 4/ac

2.2 Installing the CPU Fan and Heatsink

Aer you install the CPU into this motherboard, it is necessary to install a larger
heatsink and cooling fan to dissipate heat. You also need to spray thermal grease
between the CPU and the heatsink to improve heat dissipation. Make sure that the
CPU and the heatsink are securely fastened and in good contact with each other.

Please turn o the power or remove the power cord before changing a CPU or heatsink.

Installing the CPU Box Cooler SR1

1

2

English

15

3

English

16

4

1

N

FA

_

U

P

C

Installing the AM4 Box Cooler SR2

1

B550 Phantom Gaming 4/ac

2

English

17

3

English

18

B550 Phantom Gaming 4/ac

4

1

N

FA

_

U

P

C

*e diagrams shown here are for reference only. e header might be in a dierent
position on your motherboard.

19

English

Installing the AM4 Box Cooler SR3

1

English

20

2

B550 Phantom Gaming 4/ac

4

3

English

21

5

N

1

R

G

CPU_FAN1

6

English

22

2

D

E

L

_

B

+12V

*e diagrams shown here are for reference only. e header might be in a dierent
position on your motherboard.

FA

_

U
P
C

B550 Phantom Gaming 4/ac

2.3 Installing Memory Modules (DIMM)

is motherboard provides four 288-pin DDR4 (Double Data Rate 4) DIMM slots,
and supports Dual Channel Memory Technology.

1. For dual channel conguration, you always need to install identical (the same
brand, speed , size and chip-type) DDR4 DIMM pairs.

2. It is unable to activate Dual Channel Memory Technology with only one or three
memory module installed.

3. It is not allowed to install a DDR, DDR 2 or DDR3 memory module into a DDR4
slot; otherwise, this motherboard and DIMM may be damaged.

DDR4 UDIMM Maximum Frequency Support

Ryzen Series CPUs (Matisse):

UDIMM Memory Slot

A1 A2 B1 B2

- SR - - 3200

- DR - - 3200

- SR - SR 3200

- DR - DR 3200

SR SR SR SR 2933

SR/DR DR SR/DR DR 2667

SR/DR SR/DR SR/DR SR/DR 2667

Frequency

(Mhz)

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23

Ryzen Series APUs (Renoir):

UDIMM Memory Slot

A1 A2 B1 B2

- SR - - 3200

- DR - - 3200

- SR - SR 3200

- DR - DR 3200

SR SR SR SR 2933

SR/DR DR SR/DR DR 2667

SR/DR SR/DR SR/DR SR/DR 2667

SR: Single rank DIMM, 1Rx4 or 1Rx8 on DIMM module label

DR: Dual rank DIMM, 2Rx4 or 2R x8 on DIMM module label

Frequency

(Mhz)

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24

e DIMM only ts in one correct orientation. It will cause permanent damage to
the mothe rboard and the DIMM if you force the DIMM into the slot at incor rect
orientation.

1

2

B550 Phantom Gaming 4/ac

3

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25

2.4 Expansion Slots (PCI Express Slots)

ere are 4 PCI Express slots on the motherboard.

Before installing an ex pansion card, please make sure that the power supply is
switched o or the power cord is unplugged. Plea se read the documentation of the
expan sion card and make necessary hardware settings for the card before you start
the installation.

PCIe slots:

PCIE1 (PCIe 4.0 x16 slot) is used for PCI Express x16 lane width graphics cards.
PCIE2 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.
PCIE3 (PCIe 3.0 x16 slot) is used for PCI Express x4 lane width graphics cards.
PCIE4 (PCIe 3.0 x1 slot) is used for PCI Express x1 lane width cards.

PCIE1 PCIE3

Ryzen Series CPUs (Matisse) Gen4x16 Gen3x4

Ryzen Series APUs (Renoir) Gen3x16 Gen3x4

For a better ther mal environment, please connect a chassi s fan to the motherboard’s
chassis fan connector (CHA_ FAN1/WP, CHA_ FAN2/WP, CHA_FAN3/WP or
CHA_ FAN4/WP) when using multiple graphics cards.

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26