ASROCK B450M/ac User Manual

Version 1.0
Published May 2019
Copyright©2019 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

ASROCK B450M/ac Specifications

General

Form Factor	Micro ATX
Chipset	AMD B450
Socket	AM4
Maximum Memory	64GB
Networking	Realtek RTL8111H Gigabit LAN
Bluetooth	Yes
RAID Support	RAID 0, 1, 10
Storage	4 x SATA3, 1 x M.2
Audio	Realtek ALC887
Memory Slots	4 x DDR4 DIMM
USB Ports	6 x USB 2.0

Summary

Introduction

Package Contents

Lists all items included with the motherboard package.

Specifications

Details technical specifications including platform, CPU, chipset, memory, and expansion slots.

Installation

Pre-installation Precautions

Key safety and handling precautions before installing or modifying motherboard components.

Installing the CPU

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

Installing the CPU Fan and Heatsink

Instructions for mounting the CPU cooler and heatsink for optimal thermal dissipation.

Installing Memory Modules (DIMM)

Guide for properly installing DDR4 memory modules into the motherboard DIMM slots.

Expansion Slots (PCI Express Slots)

Details on available PCI Express slots and their configurations for expansion cards.

Jumpers Setup

Explains the function and setup of motherboard jumpers, including the Clear CMOS jumper.

Onboard Headers and Connectors

Details various onboard headers for system panel, fans, USB, audio, and LED connections.

M.2_SSD (NGFF) Module Installation Guide

Instructions for installing M.2 SSDs, including standoff placement and orientation.

ASRock Polychrome SYNC

Guide to using the ASRock Polychrome SYNC utility for customizing RGB lighting effects.