ASUS PRIME B850M-K

The ASUS PRIME B850M-K is a micro-ATX motherboard built on the AMD B850 chipset, designed to work with AMD Ryzen processors from the 7000, 8000, and 9000 series in the AM5 socket. It supports dual-channel DDR5 memory with speeds up to 8200 MT/s when overclocked and capacities up to 128 GB, and includes AMD EXPO and ASUS AEMP profiles to optimize memory performance. The board features two M.2 slots: one supports PCIe 5.0 x4 and the other PCIe 4.0 x4, enabling high-speed NVMe SSD connectivity. It also provides four SATA 6 Gbps ports for traditional storage drives. For expansion, there is one PCIe 5.0 x16 slot and one PCIe 4.0 x16 slot that runs in x4 mode, allowing you to install modern graphics cards and other expansion devices. Network connectivity is handled by a Realtek 2.5Gb Ethernet controller with ASUS LANGuard technology for surge protection. The rear panel includes two USB 3.2 Gen 2 ports (10 Gbps), two USB 3.2 Gen 1 ports (5 Gbps), four USB 2.0 ports, one HDMI 2.1 port supporting 4K@60 Hz, one DisplayPort 1.4 supporting 8K@30 Hz, three audio jacks, one PS/2 port for keyboard and mouse, and a BIOS FlashBack button for updating BIOS without installing the processor and memory. Internal connectors include one USB 3.2 Gen 1 Type-C, one USB 3.2 Gen 1 for two ports, two USB 2.0 connectors for four ports, three 4-pin fan headers, three addressable RGB Gen 2 headers, plus front panel, audio, and TPM connectors. The power delivery system uses an 8+2+1 phase design with DIGI+ VRM digital control, ensuring stable operation and overclocking support. Cooling is enhanced with heatsinks on the VRM and M.2 slots, and support for Fan Xpert 2+ technology for flexible fan tuning. The ASUS PRIME B850M-K is compatible with Windows 10 and 11 (64-bit) operating systems and measures 24.4 × 22.1 cm. It delivers a balanced combination of performance, functionality, and reliability for building modern PCs.