Users Manual English
Page 2
... code of such software and/or other Free Open Source Software Licenses. This offer is dependent on the preferred carrier and the location where you . ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT. Copies of reproduction and shipment, which you encounter any problems...
... code of such software and/or other Free Open Source Software Licenses. This offer is dependent on the preferred carrier and the location where you . ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT. Copies of reproduction and shipment, which you encounter any problems...
Users Manual English
Page 3
Contents Safety information...iv About this guide...v Package contents...vi PRIME A520M-K specifications summary vi Chapter 1 Product Introduction 1.1 Before you proceed 1-1 1.2 Motherboard overview 1-1 1.3 Central Processing Unit (CPU 1-7 1.4 System memory 1-8 Chapter 2 BIOS and RAID Support 2.1 Knowing BIOS 2-1 2.2 BIOS Setup program 2-2 2.3 ASUS EZ Flash 3 2-3 2.4 ASUS CrashFree BIOS 3 2-4 2.5 RAID configurations 2-5 Appendix Notices...A-1 ASUS contact information A-6 iii
Contents Safety information...iv About this guide...v Package contents...vi PRIME A520M-K specifications summary vi Chapter 1 Product Introduction 1.1 Before you proceed 1-1 1.2 Motherboard overview 1-1 1.3 Central Processing Unit (CPU 1-7 1.4 System memory 1-8 Chapter 2 BIOS and RAID Support 2.1 Knowing BIOS 2-1 2.2 BIOS Setup program 2-2 2.3 ASUS EZ Flash 3 2-3 2.4 ASUS CrashFree BIOS 3 2-4 2.5 RAID configurations 2-5 Appendix Notices...A-1 ASUS contact information A-6 iii
Users Manual English
Page 4
..., contact your dealer immediately. • To avoid short circuits, keep paper clips, screws, and staples away from connectors, slots, sockets and circuitry. • Avoid dust, humidity, and temperature extremes. If possible, disconnect all power cables are using the product, ensure all the manuals that the power cables for the devices are unplugged before the signal cables are not damaged. Safety information Electrical safety...
..., contact your dealer immediately. • To avoid short circuits, keep paper clips, screws, and staples away from connectors, slots, sockets and circuitry. • Avoid dust, humidity, and temperature extremes. If possible, disconnect all power cables are using the product, ensure all the manuals that the power cables for the devices are unplugged before the signal cables are not damaged. Safety information Electrical safety...
Users Manual English
Page 5
... the standard package. How this manual. It includes descriptions of the switches, jumpers, and connectors on the motherboard. • Chapter 2: BIOS and RAID Support This chapter tells how to the ASUS contact information. 2. Conventions used in this guide To ensure that you need when installing and configuring the motherboard. Refer to boot into the BIOS, upgrade BIOS using the EZ Flash Utility and support on ASUS hardware and software products. NOTE: Tips and additional...
... the standard package. How this manual. It includes descriptions of the switches, jumpers, and connectors on the motherboard. • Chapter 2: BIOS and RAID Support This chapter tells how to the ASUS contact information. 2. Conventions used in this guide To ensure that you need when installing and configuring the motherboard. Refer to boot into the BIOS, upgrade BIOS using the EZ Flash Utility and support on ASUS hardware and software products. NOTE: Tips and additional...
Users Manual English
Page 6
...M.2 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 & SATA modes) AMD A520 Chipset 4 x SATA 6Gb/s ports Support RAID 0, 1, 10 1 x Realtek RTL8111H 1Gb Ethernet Rear USB (Total 6 ports) 4 x USB 3.2 Gen 1 ports (4 x Type-A) 2 x USB 2.0 ports (2 x Type-A) USB Front USB (Total 6 ports) 1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports 2 x USB 2.0 headers support additional 4 USB 2.0 ports (continued on the next page) vi Package contents Check your motherboard package for the following items. Motherboard Cables Miscellaneous Application DVD Documentation 1 x PRIME A520M...
...M.2 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 & SATA modes) AMD A520 Chipset 4 x SATA 6Gb/s ports Support RAID 0, 1, 10 1 x Realtek RTL8111H 1Gb Ethernet Rear USB (Total 6 ports) 4 x USB 3.2 Gen 1 ports (4 x Type-A) 2 x USB 2.0 ports (2 x Type-A) USB Front USB (Total 6 ports) 1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports 2 x USB 2.0 headers support additional 4 USB 2.0 ports (continued on the next page) vi Package contents Check your motherboard package for the following items. Motherboard Cables Miscellaneous Application DVD Documentation 1 x PRIME A520M...
Users Manual English
Page 7
... Ethernet port 3 x Audio jacks 1 x PS/2 Keyboard/Mouse combo 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 8-pin +12V Power connector Storage related 1 x M.2 slot (Key M) 4 x SATA 6Gb/s ports USB 1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports 2 x USB 2.0 headers support additional 4 USB 2.0 ports Miscellaneous 1 x Clear CMOS header 1 x COM Port header 1 x Front Panel Audio header (AAFP) 1 x S/PDIF Out header 1 x Speaker header 1 x SPI TPM header (14-1pin) 1 x 10-1 pin System Panel header...
... Ethernet port 3 x Audio jacks 1 x PS/2 Keyboard/Mouse combo 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 8-pin +12V Power connector Storage related 1 x M.2 slot (Key M) 4 x SATA 6Gb/s ports USB 1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports 2 x USB 2.0 headers support additional 4 USB 2.0 ports Miscellaneous 1 x Clear CMOS header 1 x COM Port header 1 x Front Panel Audio header (AAFP) 1 x S/PDIF Out header 1 x Speaker header 1 x SPI TPM header (14-1pin) 1 x 10-1 pin System Panel header...
Users Manual English
Page 8
... Mode 256 Mb Flash ROM, UEFI AMI BIOS WOL by PME, PXE Windows 10 - 64 bit mATX Form Factor 8.9 inch x 8.7 inch (22.6 cm x 22.1 cm) S pecifications are subject to the ASUS website for 60 days) WinRAR UEFI BIOS ASUS EZ DIY - EZ update ASUS CPU-Z AI Charger DAEMON Tools Norton Anti-virus software (Free Trial for the latest specifications. ASUS Q-Slot ASUS Thermal Solution - ASUS Stainless-Steel Back I/O ASUS Q-Design - Performance and Power Saving Utility...
... Mode 256 Mb Flash ROM, UEFI AMI BIOS WOL by PME, PXE Windows 10 - 64 bit mATX Form Factor 8.9 inch x 8.7 inch (22.6 cm x 22.1 cm) S pecifications are subject to the ASUS website for 60 days) WinRAR UEFI BIOS ASUS EZ DIY - EZ update ASUS CPU-Z AI Charger DAEMON Tools Norton Anti-virus software (Free Trial for the latest specifications. ASUS Q-Slot ASUS Thermal Solution - ASUS Stainless-Steel Back I/O ASUS Q-Design - Performance and Power Saving Utility...
Users Manual English
Page 9
Failure to the motherboard, peripherals, or components. Motherboard overview KBMS _U32G1_56 VGA 5 4 15 1 22.1cm(8.7in) EATX12V DIGI+ VRM 42 CPU_FAN Place this HDMI side towards the rear of the following precautions before you install motherboard components or change any motherboard settings. 1.2 • Unplug the power cord from the wall socket before installing or removing the motherboard. ASUS PRIME A520M-K 1-1 Failure to do so may cause severe damage to do...
Failure to the motherboard, peripherals, or components. Motherboard overview KBMS _U32G1_56 VGA 5 4 15 1 22.1cm(8.7in) EATX12V DIGI+ VRM 42 CPU_FAN Place this HDMI side towards the rear of the following precautions before you install motherboard components or change any motherboard settings. 1.2 • Unplug the power cord from the wall socket before installing or removing the motherboard. ASUS PRIME A520M-K 1-1 Failure to do so may cause severe damage to do...
Users Manual English
Page 10
... other cards that comply with Radeon™ Graphics Processors, M.2 slot supports PCIe 3.0 x4 & SATA mode Key M and type 2242/2260/2280 storage devices. 7. The system may become unstable or may not boot up if the power is inadequate. • If you are fully inserted. DDR4 DIMM slots The motherboard comes with more power-consuming devices. Ensure to connect the 8-pin power plug. • For a fully configured system, we recommend you to System memory. 3. CPU socket The motherboard...
... other cards that comply with Radeon™ Graphics Processors, M.2 slot supports PCIe 3.0 x4 & SATA mode Key M and type 2242/2260/2280 storage devices. 7. The system may become unstable or may not boot up if the power is inadequate. • If you are fully inserted. DDR4 DIMM slots The motherboard comes with more power-consuming devices. Ensure to connect the 8-pin power plug. • For a fully configured system, we recommend you to System memory. 3. CPU socket The motherboard...
Users Manual English
Page 11
... BIOS setup to connect USB modules for a serial (COM) port. To erase the RTC RAM: +3V_BAT GND CLRTC PIN 1 1. USB+5V USB_P1USB_P1+ GND NC 9. Doing so will damage the motherboard! COM Port header COM This header is for additional USB 2.0 ports. Turn OFF the computer and unplug the power cord. 2. HD-audio-compliant pin definition ASUS PRIME A520M-K 1-3 USB 3.2 Gen 1 header The USB 3.2 Gen 1 header allows you to [HD Audio]. Clear CMOS header This header allows you want to connect a high-definition front panel audio...
... BIOS setup to connect USB modules for a serial (COM) port. To erase the RTC RAM: +3V_BAT GND CLRTC PIN 1 1. USB+5V USB_P1USB_P1+ GND NC 9. Doing so will damage the motherboard! COM Port header COM This header is for additional USB 2.0 ports. Turn OFF the computer and unplug the power cord. 2. HD-audio-compliant pin definition ASUS PRIME A520M-K 1-3 USB 3.2 Gen 1 header The USB 3.2 Gen 1 header allows you to [HD Audio]. Clear CMOS header This header allows you want to connect a high-definition front panel audio...
Users Manual English
Page 12
... Interface (S/PDIF) port. Connect the chassis HDD_LED+ HDD_LED- Connect the HDD Activity LED cable to this header, then install the module to the HDD. • Power button/Soft-off button (2-pin PWR_BTN) This header is for the system power LED. RESET This 2-pin header is for the system power button. • Reset button (2-pin RESET) This 2-pin header is in sleep mode. • Hard disk drive activity LED (2-pin +HDD_LED-) +HDD_LED- The system power LED lights up or flashes when data is read from or written to a slot opening at...
... Interface (S/PDIF) port. Connect the chassis HDD_LED+ HDD_LED- Connect the HDD Activity LED cable to this header, then install the module to the HDD. • Power button/Soft-off button (2-pin PWR_BTN) This header is for the system power LED. RESET This 2-pin header is for the system power button. • Reset button (2-pin RESET) This 2-pin header is in sleep mode. • Hard disk drive activity LED (2-pin +HDD_LED-) +HDD_LED- The system power LED lights up or flashes when data is read from or written to a slot opening at...
Users Manual English
Page 13
... No link Orange Linked Orange (Blinking) Data activity Orange (Blinking Ready to wake then steady) up to the table below for USB 2.0 devices. This port is HDCP compliant allowing playback of this port becomes Front Speaker Out. 6. HDMITM port. PS/2 Keyboard/Mouse combo port. Video Graphics Adapter (VGA) port. 1.2.2 Rear panel connectors 1 2 3 45 6 7 8 6 9 1. In 4-channel, 5.1-channel, and 7.1-channel configurations, the function of HD DVD, Blu-ray, and other protected content. 8. ASUS PRIME A520M-K 1-5
... No link Orange Linked Orange (Blinking) Data activity Orange (Blinking Ready to wake then steady) up to the table below for USB 2.0 devices. This port is HDCP compliant allowing playback of this port becomes Front Speaker Out. 6. HDMITM port. PS/2 Keyboard/Mouse combo port. Video Graphics Adapter (VGA) port. 1.2.2 Rear panel connectors 1 2 3 45 6 7 8 6 9 1. In 4-channel, 5.1-channel, and 7.1-channel configurations, the function of HD DVD, Blu-ray, and other protected content. 8. ASUS PRIME A520M-K 1-5
Users Manual English
Page 15
... the connectors on the socket and damaging the CPU! Unplug all power cables before you use a CPU designed for 3rd Gen AMD Ryzen™ and 3rd Gen AMD Ryzen™ with Radeon™ Graphics Processors. The AM4 socket has a different pinout design. ASUS PRIME A520M-K 1-7 Ensure that you install the heatsink and fan if necessary. The CPU fits in only one correct orientation. 1.3 Central Processing Unit (CPU) The motherboard comes with an AMD Socket...
... the connectors on the socket and damaging the CPU! Unplug all power cables before you use a CPU designed for 3rd Gen AMD Ryzen™ and 3rd Gen AMD Ryzen™ with Radeon™ Graphics Processors. The AM4 socket has a different pinout design. ASUS PRIME A520M-K 1-7 Ensure that you install the heatsink and fan if necessary. The CPU fits in only one correct orientation. 1.3 Central Processing Unit (CPU) The motherboard comes with an AMD Socket...
Users Manual English
Page 16
... the lower-sized channel for the dual-channel configuration. Recommended memory configuration DIMM_A1* DIMM_B1* DIMM_A1* DIMM_B1* 1-8 Chapter 1: Product Introduction 1.4 System memory This motherboard comes with the retailer to the DDR4 slot. • The default memory operation frequency is dependent on its Serial Presence Detect(SPD), which is notched differently from the same vendor. Under the default state, some memory modules for overclocking may install varying memory sizes in Channel A and Channel B. The...
... the lower-sized channel for the dual-channel configuration. Recommended memory configuration DIMM_A1* DIMM_B1* DIMM_A1* DIMM_B1* 1-8 Chapter 1: Product Introduction 1.4 System memory This motherboard comes with the retailer to the DDR4 slot. • The default memory operation frequency is dependent on its Serial Presence Detect(SPD), which is notched differently from the same vendor. Under the default state, some memory modules for overclocking may install varying memory sizes in Channel A and Channel B. The...
Users Manual English
Page 19
... to run the BIOS Setup. • You have installed a new system component that requires further BIOS settings or update. BIOS and RAID Support 2 2.1 Knowing BIOS The new ASUS UEFI BIOS is a Unified Extensible Interface that complies with UEFI architecture, offering a user-friendly interface that goes beyond the traditional keyboardonly BIOS controls to enable a more information on the screen during the system bootup and requests you change the default BIOS settings except in the...
... to run the BIOS Setup. • You have installed a new system component that requires further BIOS settings or update. BIOS and RAID Support 2 2.1 Knowing BIOS The new ASUS UEFI BIOS is a Unified Extensible Interface that complies with UEFI architecture, offering a user-friendly interface that goes beyond the traditional keyboardonly BIOS controls to enable a more information on the screen during the system bootup and requests you change the default BIOS settings except in the...
Users Manual English
Page 20
... after changing any BIOS setting, load the default settings to the default value. • The BIOS Setup program does not support Bluetooth devices. BIOS menu screen The BIOS Setup program can change modes from Setup Mode in using the first two options. Entering BIOS at startup To enter BIOS Setup at startup, press or during the Power-On Self Test (POST). After doing either of the three options, press key to enter BIOS. • Ensure that a USB mouse is connected to your motherboard if you in Boot menu...
... after changing any BIOS setting, load the default settings to the default value. • The BIOS Setup program does not support Bluetooth devices. BIOS menu screen The BIOS Setup program can change modes from Setup Mode in using the first two options. Entering BIOS at startup To enter BIOS Setup at startup, press or during the Power-On Self Test (POST). After doing either of the three options, press key to enter BIOS. • Ensure that a USB mouse is connected to your motherboard if you in Boot menu...
Users Manual English
Page 21
... menu to prevent system boot failure! 1. Press to switch to update the BIOS without using an OS‑based utility. 2.3 ASUS EZ Flash 3 The ASUS EZ Flash 3 feature allows you to the Drive field. 5. Insert the USB flash disk that contains the latest BIOS, and then press . 6. Reboot the system when the update process is done. ASUS PRIME A520M-K 2-3 Press to switch to ensure system compatibility and stability. Select via Storage Device(s). 4. Ensure to load the BIOS default settings...
... menu to prevent system boot failure! 1. Press to switch to update the BIOS without using an OS‑based utility. 2.3 ASUS EZ Flash 3 The ASUS EZ Flash 3 feature allows you to the Drive field. 5. Insert the USB flash disk that contains the latest BIOS, and then press . 6. Reboot the system when the update process is done. ASUS PRIME A520M-K 2-3 Press to switch to ensure system compatibility and stability. Select via Storage Device(s). 4. Ensure to load the BIOS default settings...
Users Manual English
Page 22
... BIOS 3 utility is an auto recovery tool that allows you press to load default BIOS values. The utility automatically checks the devices for the BIOS file. To ensure system compatibility and stability, we recommend that contains the BIOS file. Insert the USB flash drive containing the BIOS file to recover the BIOS setting. Recovering the BIOS To recover the BIOS: 1. When found, the utility reads the BIOS file and enters ASUS EZ Flash 3 automatically. 4. Doing so can restore a corrupted BIOS file using a USB flash drive...
... BIOS 3 utility is an auto recovery tool that allows you press to load default BIOS values. The utility automatically checks the devices for the BIOS file. To ensure system compatibility and stability, we recommend that contains the BIOS file. Insert the USB flash drive containing the BIOS file to recover the BIOS setting. Recovering the BIOS To recover the BIOS: 1. When found, the utility reads the BIOS file and enters ASUS EZ Flash 3 automatically. 4. Doing so can restore a corrupted BIOS file using a USB flash drive...
Users Manual English
Page 23
... rate, double that of the data in parallel, interleaved stacks. Use four new hard disk drives or use an existing drive and a new drive for this setup. ASUS PRIME A520M-K 2-5 For more information on configuring your RAID sets, please refer to the RAID Configuration Guide which you get all applications to the entire system. Use two new drives or use an existing drive and three new drives for this setup. 2.5 RAID configurations The motherboard supports RAID 0, RAID 1, and RAID 10 configuration.
... rate, double that of the data in parallel, interleaved stacks. Use four new hard disk drives or use an existing drive and a new drive for this setup. ASUS PRIME A520M-K 2-5 For more information on configuring your RAID sets, please refer to the RAID Configuration Guide which you get all applications to the entire system. Use two new drives or use an existing drive and three new drives for this setup. 2.5 RAID configurations The motherboard supports RAID 0, RAID 1, and RAID 10 configuration.
Users Manual English
Page 25
... may cause harmful interference to radio communications. ASUS PRIME A520M-K A-1 However, there is encouraged to try to correct the interference by turning the equipment off and on a circuit different from that interference will not occur in a residential installation. Operation is connected. - Appendix Notices FCC Compliance Information Responsible Party: Asus Computer International Address: 48720 Kato Rd., Fremont, CA 94538...
... may cause harmful interference to radio communications. ASUS PRIME A520M-K A-1 However, there is encouraged to try to correct the interference by turning the equipment off and on a circuit different from that interference will not occur in a residential installation. Operation is connected. - Appendix Notices FCC Compliance Information Responsible Party: Asus Computer International Address: 48720 Kato Rd., Fremont, CA 94538...