Motherboard PRIME A520M-R
E22855 First Edition December 2023 Copyright © 2023 ASUSTeK COMPUTER INC. All Rights Reserved. No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK COMPUTER INC. (“ASUS”).
Contents Safety information....................................................................................................... iv About this guide........................................................................................................... v Package contents....................................................................................................... vii PRIME A520M-R specifications summary..............................................................
Safety information Electrical safety • To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the system. • When adding or removing devices to or from the system, ensure that the power cables for the devices are unplugged before the signal cables are connected. If possible, disconnect all power cables from the existing system before you add a device.
About this guide This user guide contains the information you need when installing and configuring the motherboard. How this guide is organized This guide contains the following parts: • Chapter 1: Product Introduction This chapter describes the features of the motherboard and includes descriptions for each part of the motherboard. • Chapter 2: BIOS and RAID Support This chapter tells how to boot into the BIOS, upgrade BIOS using the EZ Flash Utility and support on RAID.
5. RAID Configuration Guide Please visit https://www.asus.com/support for more information on the RAID Configuration Guide.
Conventions used in this guide To ensure that you perform certain tasks properly, take note of the following symbols used throughout this user guide. CAUTION: Information to prevent damage to the components and injuries to yourself when trying to complete a task. IMPORTANT: Instructions that you MUST follow to complete a task. NOTE: Tips and additional information to help you complete a task. Package contents Check your motherboard package for the following items.
PRIME A520M-R specifications summary CPU AMD Socket AM4 for AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series/ 3000 G-Series Desktop Processors* Chipset AMD A520 Chipset * Refer to www.asus.com for CPU support list. 2 x DIMM slots, max. 64GB, DDR4 Un-buffered Memory* Dual channel memory architecture Memory * ECC memory (ECC mode) support varies by CPU.
PRIME A520M-R specifications summary 4 x USB 5Gbps ports (4 x Type-A) 2 x USB 2.0 ports (2 x Type-A) 1 x HDMI™ port Back Panel I/O Ports 1 x Realtek 1Gb Ethernet port 3 x Audio jacks 1 x PS/2 keyboard (purple) port 1 x PS/2 mouse (green) port Fan and Cooling Related 1 x 4-pin CPU Fan header 1 x 4-pin Chassis Fan header Power Related 1 x 24-pin Main Power connector 1 x 4-pin +12V Power connector Storage Related 1 x M.
PRIME A520M-R specifications summary ASUS Exclusive Software Armoury Crate AI Suite 3 - Performance And Power Saving Utility TurboV EVO EPU DIGI+ VRM Fan Xpert Software Features - EZ update - PC Cleaner ASUS CPU-Z Norton 360 Deluxe (60 Days Free Trial) WinRAR (40 Days Free Trial) UEFI BIOS ASUS EZ DIY - ASUS CrashFree BIOS 3 - ASUS EZ Flash 3 - ASUS UEFI BIOS EZ Mode BIOS 128 Mb Flash ROM, UEFI AMI BIOS BIOS CAP Filename PRIME A520M-R: PA520MR.
Chapter 1: Product Introduction Product Introduction 1.1 Before you proceed 1 Take note of the following precautions before you install motherboard components or change any motherboard settings. • Unplug the power cord from the wall socket before touching any component. • Before handling components, use a grounded wrist strap or touch a safely grounded object or a metal object, such as the power supply case, to avoid damaging them due to static electricity.
1.2 Motherboard layout 5 1 2 4 19.3cm(7.6in) CPU_FAN KBMS DIGI+ VRM CPU_12V U5G_34 4 LAN_USB_56 CHA_FAN TPM AUDIO ATX_PWR 7 8 128Mb BIOS PCIEX1 Ethernet 3 5 23.6cm(9.3in) BATTERY SATA6G_4 U5G_56 U5G_12 DDR4 DIMM_A (64bit, 288-pin module) SOCKET AM4 15 DDR4 DIMM_B (64bit, 288-pin module) HDMI PCIEX16 2280 2260 Audio Codec F_AUDIO SPDIF_OUT 2242 CLRTC COM PCIE SATA 3.0 X4 V M.
3. Expansion slots This motherboard supports one PCIe x16 graphics card and one PCIe x1 network card, SCSI card and other card that complies with the PCI Express specification. 4. Fan headers GND FAN PWR FAN IN FAN PWM The Fan headers allow you to connect fans to cool the system. 5. Power connectors These Power connectors allow you to connect your motherboard to a power supply. The power supply plugs are designed to fit in only one orientation.
10. Clear CMOS header CLRTC +3V_BAT GND The Clear CMOS header allows you to clear the Real Time Clock (RTC) RAM in the CMOS, which contains the date, time, system passwords, and system setup parameters. PIN 1 To erase the RTC RAM: 1. Turn OFF the computer and unplug the power cord. 2. Short-circuit pin 1-2 with a metal object or jumper cap for about 5-10 seconds. 3. Plug the power cord and turn ON the computer. 4.
. SPI TPM header TPM PIN 1 16. System Panel header The System Panel header supports several chassis-mounted functions. • • System power LED header (+PWR_LED-) The 2-pin header allows you to connect the System power LED. The System power LED lights up when the system is connected to a power source, or when you turn on the system power, and blinks when the system is in sleep mode. Storage Device Activity LED header (+HDD_LED-) The 2-pin header allows you to connect the Storage Device Activity LED.
1.2.2 Rear panel connectors 1 2 4 6 5 3 7 Rear panel connectors 1. 2. 3. 4. 5. 6. PS/2 mouse (green) port Realtek 1Gb Ethernet port* Audio jacks** PS/2 keyboard (purple) port HDMI™ port USB 5Gbps ports 3, 4, 5, 6 7. USB 2.0 ports 5, 6 * and **: Refer to the tables below for LAN port LEDs, and audio port definitions. We strongly recommend that you connect your devices to ports with matching data transfer rate.
** Audio 2, 4, 5.1 or 7.1-channel configuration Port 2-channel LINE IN LINE OUT Front Speaker Out MIC IN 4-channel Rear panel Rear Speaker Out Front Speaker Out - 5.1-channel 7.
1.3 CPU installation The motherboard comes with an AMD Socket AM4 designed for AMD Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series/ 3000 G-Series Desktop Processors. Unplug all power cables before installing the CPU. The AM4 socket has a different pinout design. Ensure that you use a CPU designed for the AM4 socket. The CPU fits in only one correct orientation.
1.4 DIMM installation The figure illustrates the location of the DDR4 DIMM sockets. DIMM_A DIMM_B A DDR4 memory module is notched differently from a DDR, DDR2, or DDR3 module. DO NOT install a DDR, DDR2, or DDR3 memory module to the DDR4 slot. Recommended memory configurations DIMM_A DIMM_B DIMM_A DIMM_B • You may install varying memory sizes in the DIMM channels. The system maps the total size of the lower-sized channel for the dual-channel configuration.
Installing a DIMM 1 2 3 DIMM removal B 1-10 Chapter 1: Product Introduction A
Chapter 2: BIOS and RAID Support BIOS and RAID Support 2 For more details on BIOS and RAID configurations, please refer to Manual & Document under the Support tab of the product information site, or visit https://www.asus.com/support. 2.1 Knowing UEFI BIOS BIOS (Basic Input and Output System) stores system hardware settings such as storage device configuration, overclocking settings, advanced power management, and boot device configuration that are needed for system startup in the motherboard CMOS.
2.2 ASUS EZ Flash 3 The ASUS EZ Flash 3 feature allows you to update the BIOS without using an OS‑based utility. Ensure to load the BIOS default settings to ensure system compatibility and stability. Select the Load Optimized Defaults item under the Exit menu or press the hotkey. To update the BIOS: 2-2 • This function can support devices such as a USB flash disk with FAT 32/16 format and single partition only.
2.3 ASUS CrashFree BIOS 3 The ASUS CrashFree BIOS 3 utility is an auto recovery tool that allows you to restore the BIOS file when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS file using a USB flash drive that contains the BIOS file. Recovering the BIOS 1. Download the latest BIOS version for this motherboard from https://www.asus.com/support/. 2. Rename the file using one of the following methods: • Launch the BIOSRenamer.
2.4 RAID configurations The motherboard supports RAID configurations. RAID definitions Volume provides the ability to link-together storage from one or several disks, regardless of the size of the space on those disks. This configuration is useful in scavenging space on disks unused by other disks in the array. This configuration does not provide performance benefits or data redundancy, disk failure will result in data loss.
Appendix Appendix General Notices FCC Compliance Information Responsible Party: Asus Computer International Address: 48720 Kato Rd., Fremont, CA 94538, USA Phone / Fax No: (510)739-3777 / (510)608-4555 This 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.
VCCI: Japan Compliance Statement Class B ITE Japan JATE 本製品は電気通信事業者（移動通信会社、固定通信会社、インターネットプロバイダ等）の通信 回線（公衆無線LANを含む）に直接接続することができません。本製品をインターネットに接続す る場合は、必ずルーター等を経由し接続してください。 Declaration of compliance for product environmental regulation ASUS follows the green design concept to design and manufacture our products, and makes sure that each stage of the product life cycle of ASUS product is in line with global environmental regulations.
Türkiye RoHS AEEE Yönetmeliğine Uygundur ASUS Recycling/Takeback Services ASUS recycling and takeback programs come from our commitment to the highest standards for protecting our environment. We believe in providing solutions for you to be able to responsibly recycle our products, batteries, other components as well as the packaging materials. Please go to http://csr.asus.com/english/Takeback.htm for detailed recycling information in different regions. DO NOT throw the motherboard in municipal waste.
Notices for non Wi-Fi model Compliance Statement of Innovation, Science and Economic Development Canada (ISED) This device complies with Innovation, Science and Economic Development Canada licence exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.
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Warranty EN: ASUS Guarantee Information • ASUS offers a voluntary manufacturer’s Commercial Guarantee. • ASUS reserves the right to interpret the provisions of the ASUS Commercial Guarantee. • This ASUS Commercial Guarantee is provided independently and in addition to the statutory Legal Guarantee and in no way affects or limits the rights under the Legal Guarantee. CR: Informacije o ASUS jamstvu • ASUS dragovoljno nudi komercijalno proizvođačko jamstvo.
PG: Informações de Garantia ASUS • A ASUS oferece uma Garantia Comercial voluntária do fabricante. • A ASUS reserva o direito de interpretar as disposições da Garantia Comercial da ASUS. • Esta Garantia Comercial da ASUS é fornecida de forma independente além da Garantia Legal estatutária e não afeta nem limita de qualquer forma os direitos estabelecidos na Garantia Legal. Para consultar todas as informações sobre a garantia, visite https://www.asus.com/pt/support/.
ASUS contact information ASUSTeK COMPUTER INC. Address: 1F., No. 15, Lide Rd., Beitou Dist., Taipei City 112 ASUS COMPUTER INTERNATIONAL (America) Address: 48720 Kato Rd., Fremont, CA 94538, USA ASUS COMPUTER GmbH (Germany and Austria) Address: Harkortstrasse 21-23, 40880 Ratingen, Germany ASUSTeK (UK) LIMITED Address: 1st Floor, Sackville House, 143-149 Fenchurch Street, London, EC3M 6BL, England, United Kingdom Service and Support Visit our multi-language website at https://www.asus.com/support.
