1. Introdución
This manual provides essential information for the installation, operation, and maintenance of your ASUS Prime A520M-K motherboard. The ASUS Prime A520M-K is a Micro-ATX motherboard designed for AMD AM4 socket processors, supporting 3rd Gen AMD Ryzen processors. It features DDR4 memory support, PCIe expansion, and multiple display outputs for a reliable computing experience.

Figure 1: ASUS Prime A520M-K Motherboard and Retail Box.
2. Configuración e instalación
Careful installation is crucial for optimal performance. Ensure your system components are compatible with the ASUS Prime A520M-K motherboard.
2.1. Instalación do procesador
The motherboard features an AMD AM4 socket. Align your AMD AM4 processor with the socket, ensuring the triangular markers on the CPU and socket match. Gently place the CPU into the socket without applying force, then secure it with the retention lever.
2.2. Instalación da memoria
The ASUS Prime A520M-K supports up to 64GB of DDR4 RAM across two DIMM slots. Insert DDR4 memory modules into the slots, ensuring they are properly seated until the clips on both ends lock into place.
2.3. Tarxetas de expansión
Utilize the PCIe expansion slots for graphics cards or other expansion cards. Align the card with the slot and press firmly until it is fully seated. Secure the card with a screw to the chassis.
2.4. Dispositivos de almacenamento
Connect SATA storage devices (HDDs/SSDs) to the available SATA 6Gb/s ports using SATA data cables. Ensure power cables from your power supply are also connected to these devices.
2.5. Conexións de alimentación
Connect the 24-pin ATX main power connector and the 8-pin ATX 12V power connector from your power supply to the corresponding ports on the motherboard.
2.6. Conectores do panel frontal
Connect your chassis's front panel cables (power button, reset button, USB ports, audio jacks, LED indicators) to the designated headers on the motherboard. Refer to the motherboard diagram for precise locations.
2.7. Panel de E/S traseiro
The rear I/O panel includes various ports for peripherals:
- D-SUB (VGA) Port: Para conectar a monitores máis antigos.
- Porto HDMI: Para conectar a pantallas modernas.
- Portos USB 2.0: For connecting peripherals like keyboards and mice.
- Porto LAN: Para a conectividade de rede.
- Conectores de son: Para altofalantes, auriculares e micrófonos.

Figure 2: Rear I/O panel with D-SUB, HDMI, USB, LAN, and audio ports.
Vídeo 1: Produto rematadoview of the ASUS Prime A520M-K Motherboard, demonstrating key features and connectivity options for easy installation.
3. Instrucións de funcionamento
Unha vez instalados e conectados todos os compoñentes, podes acender o sistema.
3.1. Primeiro arranque
Upon the first boot, the system may enter the BIOS/UEFI setup utility. This allows you to configure system settings, boot order, and monitor hardware status. Press the designated key (usually Del or F2) during startup to access the BIOS.
3.2. Instalación do sistema operativo
Install your preferred operating system (e.g., Windows) from a bootable USB drive or DVD. Follow the on-screen instructions provided by the operating system installer.
3.3. Instalación de controladores
After installing the operating system, install the necessary drivers for the motherboard's chipset, audio, LAN, and any other integrated components. These drivers are typically provided on a support DVD or can be downloaded from the ASUS official websitio.
4. Mantemento
Un mantemento regular axuda a garantir a lonxevidade e o funcionamento estable da túa placa base.
- Eliminación de po: Limpa periodicamente o po da placa base e dos compoñentes con aire comprimido. Asegúrate de que o sistema estea apagado e desconectado antes de limpalo.
- Actualizacións da BIOS/UEFI: Keep your BIOS/UEFI firmware updated to benefit from performance improvements, bug fixes, and support for new hardware. Download updates only from the official ASUS websitio.
- Xestión de cables Ensure all cables are neatly routed and secured to prevent obstruction of airflow and accidental disconnections.
- Batería CMOS: The motherboard uses a small lithium-ion battery (CR2032) to retain BIOS settings and system time. If your system consistently loses time or BIOS settings, this battery may need replacement.
5 Solución de problemas
Se tes problemas, consulta os seguintes pasos comúns para a resolución de problemas:
- Sen enerxía: Check all power connections, including the 24-pin and 8-pin connectors to the motherboard, and ensure the power supply is switched on.
- Sen visualización: Verify that your monitor is connected to the correct display output (D-SUB or HDMI) on the motherboard or dedicated graphics card. Reseat the graphics card and RAM modules.
- Inestabilidade/fallos do sistema: This can be caused by incompatible RAM, overheating, or outdated drivers. Check RAM compatibility, ensure proper cooling, and update all drivers.
- Erros de código postal: If your motherboard has diagnostic LEDs or a POST code display, consult the ASUS website or full manual for the meaning of specific codes.
- Reinicio da BIOS: To reset BIOS settings to default, locate the CLRTC (Clear CMOS) jumper on the motherboard and follow the instructions in the full manual, or remove the CMOS battery for a few minutes.
6. Especificacións
Detailed technical specifications for the ASUS Prime A520M-K motherboard:
| Característica | Especificación |
|---|---|
| Marca | ASUS |
| Serie | PRIME A520M-K |
| Número de modelo | 90MB1500-M0EAY0 |
| Socket CPU | Enchufe AM4 |
| Procesadores compatibles | AMD AM4 Socket 3rd Gen AMD Ryzen |
| Tipo de chipset | AMD A520 |
| Tecnoloxía de memoria RAM | SDRAM DDR4 |
| Slots de memoria | 2 x DIMM |
| Memoria máxima compatible | 64 GB |
| Velocidade do reloxo da memoria | 2133 MHz (base) |
| Número de portos USB 2.0 | 2 (E/S traseira) |
| Saída de vídeo | D-SUB, HDMI |
| Factor de forma | Micro ATX |
| Dimensións do produto (LxWxH) | 8.9 x 8.7 x 0.79 polgadas |
| Peso do elemento | 1.19 libras |
| Cor | Negro |
| Plataforma | Windows |
| Data de primeira dispoñibilidade | 18 de agosto de 2020 |
7. Garantía e soporte
The ASUS Prime A520M-K motherboard typically comes with a manufacturer's warranty. Please refer to the warranty card included with your product or visit the official ASUS support website for detailed warranty terms and conditions. For technical assistance, driver downloads, and further support, please visit the Soporte ASUS websitio.

Figure 3: ASUS Prime A520M-K Motherboard, indicating a 3-year warranty.