1. Einleitung
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. Einrichtung und Installation
Careful installation is crucial for optimal performance. Ensure your system components are compatible with the ASUS Prime A520M-K motherboard.
2.1. Prozessorinstallation
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. Speicherinstallation
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. Erweiterungskarten
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. Storage Devices
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. Stromanschlüsse
Verbinden Sie den 24-poligen ATX-Hauptstromanschluss und den 8-poligen ATX-12V-Stromanschluss Ihres Netzteils mit den entsprechenden Anschlüssen auf dem Motherboard.
2.6. Frontplattenanschlüsse
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. Rückseitige I/O-Leiste
The rear I/O panel includes various ports for peripherals:
- D-SUB (VGA) Port: For connecting to older monitors.
- HDMI-Anschluss: For connecting to modern displays.
- USB 2.0 Ports: Zum Anschließen von Peripheriegeräten wie Tastaturen und Mäusen.
- LAN-Anschluss: Für die Netzwerkkonnektivität.
- Audiobuchsen: Für Lautsprecher, Kopfhörer und Mikrofone.

Figure 2: Rear I/O panel with D-SUB, HDMI, USB, LAN, and audio ports.
Video 1: Produktübergabeview of the ASUS Prime A520M-K Motherboard, demonstrating key features and connectivity options for easy installation.
3. Bedienungsanleitung
Sobald alle Komponenten installiert und angeschlossen sind, können Sie Ihr System einschalten.
3.1. Erster Start
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. Installation des Betriebssystems
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. Treiberinstallation
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 webWebsite.
4. Wartung
Regelmäßige Wartung trägt zur Langlebigkeit und zum stabilen Betrieb Ihres Motherboards bei.
- Staubentfernung: Reinigen Sie die Hauptplatine und die Komponenten regelmäßig mit Druckluft von Staub. Stellen Sie sicher, dass das System vor der Reinigung ausgeschaltet und vom Stromnetz getrennt ist.
- BIOS/UEFI-Updates: 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 webWebsite.
- Kabelmanagement: Ensure all cables are neatly routed and secured to prevent obstruction of airflow and accidental disconnections.
- CMOS-Batterie: 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. Fehlerbehebung
Sollten Probleme auftreten, beachten Sie bitte die folgenden gängigen Schritte zur Fehlerbehebung:
- Kein Strom: Check all power connections, including the 24-pin and 8-pin connectors to the motherboard, and ensure the power supply is switched on.
- Kein Bildschirm: 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.
- Systeminstabilität/Abstürze: This can be caused by incompatible RAM, overheating, or outdated drivers. Check RAM compatibility, ensure proper cooling, and update all drivers.
- POST-Code-Fehler: If your motherboard has diagnostic LEDs or a POST code display, consult the ASUS website or full manual for the meaning of specific codes.
- BIOS-Reset: 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. Spezifikationen
Detailed technical specifications for the ASUS Prime A520M-K motherboard:
| Besonderheit | Spezifikation |
|---|---|
| Marke | ASUS |
| Serie | PRIME A520M-K |
| Modellnummer | 90MB1500-M0EAY0 |
| CPU-Sockel | Sockel AM4 |
| Kompatible Prozessoren | AMD AM4 Socket 3rd Gen AMD Ryzen |
| Chipsatztyp | AMD A520 |
| RAM-Speichertechnologie | DDR4 SDRAM |
| Memory Slots | 2 x DIMM |
| Maximal unterstützter Speicher | 64 GB |
| Speichertaktfrequenz | 2133 MHz (Basis) |
| Anzahl der USB 2.0-Anschlüsse | 2 (Rückseitige Ein-/Ausgänge) |
| Videoausgang | D-SUB, HDMI |
| Formfaktor | Micro ATX |
| Produktabmessungen (L x B x H) | 8.9 x 8.7 x 0.79 Zoll |
| Artikelgewicht | 1.19 Pfund |
| Farbe | Schwarz |
| Plattform | Windows |
| Datum der ersten Verfügbarkeit | 18. August 2020 |
7. Garantie und Support
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 ASUS-Kundendienst webWebsite.

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