ASUS PRIME B850M-K: Advanced AMD Ryzenâ„¢ AM5 Motherboard
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- Optimized for AMD Ryzenâ„¢ 9000 Series with advanced AI-capabilities
- Supports ultra-fast DDR5 memory up to 128GB with EXPOâ„¢ and AEMP technologies
- Robust connectivity including PCIe 5.0 slots and Realtek 2.5Gb Ethernet
- Enhanced audio, cooling, and protection features for reliable performance
- Quick delivery and 3-day return policy on manufacturing defects
Product Overview
The ASUS PRIME B850M-K is a motherboard expertly engineered for
AMD Ryzenâ„¢ 9000 series processors, designed for PC enthusiasts and DIY builders. It offers performance optimizations through intuitive software and firmware features and is Advanced AI PC-ready, providing power and connectivity for demanding AI applications.
You have the right to request a return within 3 days of receiving the order if there is a defect or manufacturing issue with the product, subject to Terms and Conditions.
Delivery is within 1 to 2 days.
Technical Details
Model: PRIME B850M-K
CPU: AMD Socket AM5 compatible with AMD Ryzenâ„¢ 9000, 8000, and 7000 series Desktop Processors.
Chipset: AMD B850 Chipset.
Memory configuration includes 2 DIMM slots supporting up to 128GB DDR5 speeds with overclocking capability such as 8200+ MT/s for Ryzen 9000 Series, enhanced by AMD Extended Profiles for Overclocking (EXPOâ„¢) and ASUS Enhanced Memory Profile (AEMP). Both ECC and Non-ECC Un-buffered DIMM are supported along with dual channel architecture.
Graphics: Includes 1 DisplayPort and 1 HDMIâ„¢ port; supports resolutions up to 8K@30Hz DisplayPort 1.4 and 4K@60Hz HDMI 2.1.
Expansion capabilities feature a PCIe 5.0 x16 slot for Ryzen 9000/7000 processors, PCIe 4.0 x16 (x8/x4 mode) for Ryzen 8000, and PCIe 4.0 x16 (x4 mode) for AMD B850 Chipset, providing modern high-bandwidth connectivity.
The storage system includes dual M.2 slots capable of PCIe 5.0 or 4.0 speeds depending on CPU, and four SATA 6Gb/s ports with RAID support that varies by Ryzen series, ideal for demanding data workflows and storage configurations.
Networking is powered by Realtek 2.5Gb Ethernet coupled with ASUS LANGuard technology, ensuring reliable and stable internet connections.
Connectivity and Audio
The rear I/O panel provides 8 USB ports, including 2x USB 10Gbps Type-A, 2x USB 5Gbps Type-A, and 4x USB 2.0 ports. Front panel includes USB Type-C® port and headers that support additional USB connections.
For high-quality audio, the motherboard features the Realtek 7.1 Surround Sound HD Audio CODEC, enhanced with audio shielding, premium capacitors, and dedicated PCB layers to minimize interference and deliver crystal-clear sound performance.
Additional internal connectors cover fan headers, power connectors, storage ports (M.2 and SATA), USB headers, RGB headers, CMOS reset, COM, front panel audio, S/PDIF, SPI TPM, and system panel connectors, facilitating extensive customization and expandability.
Special Features & Software
The ASUS PRIME B850M-K is equipped with ASUS 5X Protection III combining DIGI+ VRM, LANGuard, SafeSlot, and overvoltage protection for system reliability. The motherboard employs Q-Design elements such as Q-DIMM, Q-LED Core, and Q-Slot for easy installation and troubleshooting, plus advanced thermal solutions with dedicated heatsinks.
EZ DIY features include BIOS FlashBackâ„¢ for straightforward BIOS updates and Aura Sync RGB for customizable lighting effects that synchronize with compatible devices.
The bundled software suite, Armoury Crate, includes Aura Creator, Fan Xpert 2+,
ASUS AI Advisor, and other utilities for monitoring and optimizing system performance and aesthetics.
The UEFI BIOS provides ASUS crash recovery and EZ flash update capabilities for easy maintenance and system stability.
Included Accessories and Form Factor
Accessories include SATA cables, an I/O shield, M.2 rubber pads and screws, and a quick start guide to assist in setup.
The form factor is micro-ATX (9.6″ x 8.7″), supporting Windows® 11 and 10 64-bit operating systems.
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Specifications
| Attribute | Specification |
|---|---|
| Brand | Asus |
| CPU Socket | Socket AM5 |
| Memory Support | DDR5 |
| Model | PRIME B850M-K |
| CPU Compatibility | AMD Ryzenâ„¢ 9000, 8000, 7000 Series Desktop Processors |
| Chipset | AMD B850 Chipset |
| Memory Slots | 2 x DIMM |
| Max Memory | 128GB DDR5 |
| Memory Speed (OC) | 8200+ MT/s (Ryzen 9000), 8400+ MT/s (Ryzen 8000), 8000+ MT/s (Ryzen 7000) |
| Memory Features | ECC and Non-ECC Un-buffered DIMM, Dual channel, EXPOâ„¢, AEMP |
| Graphics Ports | 1 x DisplayPort, 1 x HDMIâ„¢ port |
| Max Graphics Resolution | 8K@30Hz DisplayPort, 4K@60Hz HDMI 2.1 |
| Expansion Slots | PCIe 5.0 x16 (9000 & 7000 Series), PCIe 4.0 x16 (8000 Series), PCIe 4.0 x16 (Chipset) |
| Storage | 2 x M.2 slots, 4 x SATA 6Gb/s Ports, RAID support varies by Ryzen Series |
| Ethernet | Realtek 2.5Gb Ethernet with ASUS LANGuard |
| Rear USB Ports | 2 x USB 10Gbps (Type-A), 2 x USB 5Gbps (Type-A), 4 x USB 2.0 (Type-A) |
| Front USB Ports | 1 x USB 5Gbps (Type-C), plus headers for additional ports |
| Audio | Realtek 7.1 Surround Sound HD Audio, Audio Shielding, Premium capacitors |
| Back Panel Ports | USB ports, DisplayPort, HDMI, Ethernet, Audio jacks, BIOS FlashBackâ„¢, PS/2 combo port |
| Internal Connectors | Fan headers, Power connectors, Storage connectors, USB, RGB headers, CMOS, COM, Front Audio, S/PDIF, TPM, System Panel |
| Special Features | ASUS 5X Protection III, Q-Design, Thermal Solution, EZ DIY, Aura Sync RGB |
| Software | Armoury Crate, Aura Creator, Fan Xpert 2+, AI Advisor, DriverHub, TurboV Core, CPU-Z, Adobe Creative Cloud, Norton 360, WinRAR |
| BIOS | 256 Mb Flash ROM, UEFI AMI BIOS with ASUS CrashFree BIOS 3, EZ Flash 3 |
| Form Factor | micro-ATX (9.6 x 8.7 inches) |
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