ASROCK B550 PRO4 User Manual

Version 1.0
Published May 2020
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two conditions:
(1) this device may not cause harmful interference, and
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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”
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ASROCK B550 PRO4 Specifications

General

Processor socket	Socket AM4
Processor manufacturer	AMD
Compatible processor series	AMD Ryzen 3 3rd Gen, AMD Ryzen 5 3rd Gen, AMD Ryzen 7 3rd Gen, AMD Ryzen 9 3rd Gen
Maximum number of SMP processors	1
ECC	Yes
Memory channels	Dual-channel
Memory slots type	DIMM
Number of memory slots	4
Supported memory types	DDR4-SDRAM
Maximum internal memory	128 GB
Supported memory clock speeds	2133, 2400, 2667, 2933, 3200, 3466, 3600, 3733, 3800, 3866, 4000, 4133, 4200, 4266, 4333, 4400, 4466, 4533 MHz
Supported memory clock speed (max)	4533 MHz
Supported memory module capacities	4GB, 8GB, 16GB, 32GB
RAID levels	0, 1, 10
Supported storage drive types	HDD & SSD
Supported storage drive interfaces	M.2, SATA III
DirectX version	12.0
Parallel processing technology support	CrossFireX, Quad-GPU CrossFireX
USB 2.0 connectors	2
Number of SATA III connectors	6
USB 3.2 Gen 2 (3.1 Gen 2) connectors	0
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Wi-Fi	No
LAN controller	Realtek RTL8111H
Ethernet interface type	Gigabit Ethernet
Audio chip	Realtek ALC1200
Component for	PC
Motherboard chipset	AMD B550
PC health monitoring	CPU, FAN, Temperature, Voltage, Water cooling
Audio output channels	7.1 channels
Motherboard form factor	ATX
BIOS type	UEFI AMI
ACPI version	5.1
BIOS memory size	256 Mbit
System Management BIOS (SMBIOS) version	2.3
Cables included	SATA
Harmonized System (HS) code	84733020
Weight	465 g

Weight and Dimensions

Depth	244 mm
Width	305 mm
Height	87 mm

Summary

Product Information and Compliance

Copyright and Disclaimer

Details documentation rights, reproduction limitations, and product warranty disclaimers.

Regulatory Compliance Statements

Covers FCC compliance for unintentional radiators and California battery handling advice.

Australia Consumer Law Guarantees

Outlines consumer rights and guarantees applicable under Australian Consumer Law.

Motherboard Layout and I/O Panel

Component Identification Diagram

Illustrates the physical layout and numbered components on the motherboard.

Rear Panel Connector Overview

Details the rear panel ports, their functions, and LAN port LED indicators.

Chapter 1: Introduction

Package Contents

Lists all items included in the ASRock B550M Pro4 motherboard package.

Motherboard Specifications

Platform, CPU, and Chipset

Details motherboard form factor, CPU support, chipset, and power design specifications.

Memory Support and Configurations

Details DDR4 memory technology, slots, supported speeds, and capacity.

Expansion Slot Configurations

Details PCI Express slot configurations for Matisse and Renoir CPUs.

Graphics Features and Outputs

Covers integrated graphics, display outputs, resolutions, and HDR support.

Audio Features and Codec

Describes the 7.1 CH HD Audio, premium Blu-ray support, and Nahimic Audio.

LAN and Network Connectivity

Details Gigabit LAN features, including Wake-On-LAN and ESD protection.

Rear Panel I/O Ports

Lists and explains all ports available on the motherboard's rear panel.

Storage Interfaces and M.2 Support

Covers SATA connectors and M.2 socket support for storage modules.

Onboard Headers and Connectors

Details various onboard headers for system panel, fans, LEDs, and USB ports.

BIOS Features and Settings

Explains AMI UEFI BIOS features like GUI support, Plug and Play, and jumperfree.

Hardware Monitoring Functions

Covers temperature, fan speed, and voltage monitoring capabilities.

Operating System and Certifications

Lists supported OS and relevant certifications like FCC and CE.

Installation Guide

Pre-installation Precautions

Essential safety and handling guidelines before installing motherboard components.

Installing the CPU

Step-by-step instructions for correctly installing the CPU into the socket.

Installing the CPU Fan and Heatsink

Guide for mounting CPU coolers (SR1, SR2, SR3) and ensuring proper thermal contact.

Installing Memory Modules (DIMM)

Instructions for installing DDR4 DIMM modules for dual channel configuration.

Expansion Slot Installation

Details on installing expansion cards into PCIe slots and their configurations.

Jumpers Setup

Explains the function and setup of the Clear CMOS jumper (CLRCMOS1).

System Panel Header Connections

Guide for connecting the chassis front panel buttons and LEDs to the system panel header.

Power, SATA, and USB Headers

Details connections for power LEDs, speakers, SATA devices, and USB ports.

Audio and Fan Connectors

Instructions for connecting front panel audio and chassis water pump fan headers.

Additional Power and Header Connections

Covers ATX power connectors, CPU fan/pump headers, and chassis fan headers.

Serial Port and TPM Header

Details connections for serial port modules and the Trusted Platform Module (TPM).

LED Header Connections

Instructions for connecting RGB and Addressable LED strips to motherboard headers.

Post Status Checker Function

Explains the Post Status Checker (PSC) for diagnosing system boot issues.

M.2 WiFi/BT Module Installation

Step-by-step guide for installing a M.2 WiFi/BT module into the M.2_3 socket.

M.2_SSD (NGFF) Installation (M2_1)

Guide for installing M.2 NVMe SSDs into the Hyper M.2 Socket (M2_1).

M.2_SSD (NGFF) Installation (M2_2)

Guide for installing M.2 SATA SSDs into the M.2 Socket (M2_2).

ASRock Polychrome SYNC Utility

Connecting RGB LED Strips

Instructions for connecting standard RGB LED strips to the motherboard headers.

Connecting Addressable RGB Strips

Instructions for connecting addressable RGB LED strips to the motherboard headers.

Using the Polychrome SYNC Utility

Guide on how to use the utility to customize RGB lighting effects and preferences.

Contact Information

ASRock Global Contact Details

Provides contact information for ASRock Incorporation, Europe, and America.

Declarations of Conformity

FCC Declaration of Conformity

Formal declaration that the motherboard complies with FCC Part 15 regulations.

EU Declaration of Conformity

Formal declaration of compliance with EU directives for EMC and LVD.