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| Basic Information | ||
| Supported CPU | AMD Ryzen 9000, 8000, and 7000 Series desktop processors | |
| Chipset | AMD B840 Chipset | |
| Form Factor | micro-ATX | |
| Memory | ||
| Number of Memory Slots | 2 | |
| Channel Supported | Dual-channel | |
| Maximum Memory | Up to 128GB | |
| Supported Memory | DDR5 | |
| Graphics | ||
| Graphics | PCIe 4.0 x16 | |
| Storage | ||
| Supported Storage | 2 x PCIe 4.0 M.2 slots and 4 x SATA 6Gb/s ports | |
| Network | ||
| LAN | Realtek 2.5Gb Ethernet | |
| Audio | ||
| Audio | Realtek 7.1-channel high-definition audio | |
| BIOS | ||
| BIOS | 32MB (256Mb) Flash ROM, UEFI AMI BIOS | |
| Ports & Connectors | ||
| HDMI | 1 x HDMI port | |
| USB Ports | Rear USB (Total 6 ports) 4 x USB 5Gbps ports (4 x Type-A) 2 x USB 2.0 ports (2 x Type-A) Front USB (Total 7 ports) 1 x USB 5Gbps connector (supports USB Type-C) 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports 2 x USB 2.0 headers support 4 additional USB 2.0 ports USB Type-C power delivery output: max. 5V/3A. | |
| Audio | Realtek 7.1-channel high-definition audio | |
| RAID | RAID 0, 1, 5, 10 (AMD RAIDXpert2) | |
| TPM (Trusted Platform Module ) | 1 x SPI TPM header (14-1 pin) | |
| Internal I/O Ports | 4 x USB 5Gbps ports (4 x Type-A) 2 x USB 2.0 ports (2 x Type-A) 1 x HDMI por 1 x Realtek 2.5Gb Ethernet port 3 x Audio jacks | |
| Others | ||
| Bundled Software | Armoury Crate, Fan Xpert 2+, ASUS AI Advisor, Aura Sync | |
| Special feature | ASUS 5X Protection III | |
| Warranty | ||
| Warranty | 3-Year | |
The ASUS PRIME B840M-K AM5 micro-ATX Motherboard is designed to deliver dependable performance for modern AMD desktop systems. Built around the AMD B840 chipset and the AM5 platform, it supports AMD Ryzen 9000, 8000, and 7000 Series processors, making it a strong choice for users who want a stable foundation for gaming, content creation, and everyday productivity. If you’re assembling a compact yet capable PC, this micro-ATX board helps you balance performance with a space-efficient layout.
Chipset: AMD B840. This chipset provides the core platform features needed for a smooth day-to-day experience, while also enabling long-term upgrade potential within the AM5 ecosystem. With support for AMD Ryzen 9000, 8000, and 7000 Series desktop CPUs, the board is suitable for both new builds and thoughtful upgrades—especially when you want to keep your system aligned with current AMD desktop capabilities.
Memory slots: 2 DDR5 DIMM slots. The ASUS PRIME B840M-K supports up to 128GB of DDR5 memory, enabling smoother multitasking and better performance in memory-intensive workloads. Dual-channel memory architecture improves responsiveness, which can be beneficial when running multiple applications at once, working with large files, or handling heavier browser sessions. For users who want faster responsiveness, the board supports memory speeds up to 8000+ MT/s (overclocking), with AMD EXPO and ASUS AEMP technologies helping you reach optimized memory performance.
Supported storage: The motherboard includes two PCIe 4.0 M.2 slots for high-speed NVMe SSDs, plus four SATA 6Gb/s ports for additional drives. This combination is ideal for users who want both speed and flexibility—such as installing the operating system and frequently used applications on an NVMe SSD, while using SATA drives for bulk storage. For data management and resilience, AMD RAIDXpert2 support enables RAID configurations including RAID 0, 1, 5, and 10, which can help balance performance and protection depending on your storage strategy.
Graphics: The board features a PCIe 4.0 x16 slot to support modern graphics cards for gaming and professional workloads. This makes it suitable for building a capable desktop system where GPU performance matters. For expansion, the board is built to support a practical set of components for everyday use, helping you create a balanced setup for productivity, entertainment, and creative tasks.
LAN: Realtek 2.5Gb Ethernet, supporting strong wired networking performance for online gaming, video calls, and fast file transfers. ASUS LANGuard technology helps improve network reliability and protection, which is useful for maintaining stable connectivity in demanding environments. For sound, the motherboard includes Realtek 7.1-channel high-definition audio, supported by premium audio capacitors and dedicated PCB layers to enhance audio quality for entertainment and gaming.
ASUS 5X Protection III technology enhances durability and system safety, featuring elements such as DIGI+ VRM, SafeSlot Core+, overvoltage protection, and stainless-steel rear I/O protection. For builders, ASUS Q-Design tools simplify installation and troubleshooting, helping reduce friction during setup. The board also comes with software support including Armoury Crate, Fan Xpert 2+, ASUS AI Advisor, and Aura Sync, which can help with system tuning, fan management, and customizable lighting experiences.
For buyers in Bangladesh looking for an AM5 micro-ATX motherboard with DDR5 support, PCIe 4.0 M.2 storage options, and reliable Realtek 2.5Gb networking, the ASUS PRIME B840M-K offers a well-rounded feature set for modern AMD desktop builds. It’s a practical option for users who want stability and expandability without moving to a larger form factor. If you’re planning a system that can handle both daily tasks and performance-focused applications, this motherboard is a solid starting point—especially when paired with compatible Ryzen 9000, 8000, or 7000 Series processors.
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