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Item DC-4819
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Model | PRIME B850M-K |
| Form Factor | micro-ATX |
| Dimensions | 9.6 × 8.7 in (24.4 × 22.1 cm) |
| Socket | AMD AM5 |
| Chipset | AMD B850 |
| OS Support | Windows® 11 / Windows® 10 (64-bit) |
| CPU Support | |
| Supported CPUs | Ryzen™ 9000 / 8000 / 7000 Series |
| CPU Socket | AM5 |
| Memory | |
| Memory Slots | 2 × DIMM |
| Max Capacity | 128 GB |
| Memory Type | DDR5 |
| Memory Speed (OC) | Up to 9600+ MT/s (CPU dependent) |
| Architecture | Dual Channel |
| ECC Support | ECC & Non-ECC (Un-buffered) |
| Memory Profiles | AMD EXPO™, ASUS AEMP |
| On-Die ECC | Supported (Non-ECC DDR5) |
| Graphics Output | |
| DisplayPort | 1 × DP 1.4 (Up to 8K @ 30Hz) |
| HDMI | 1 × HDMI 2.1 (Up to 4K @ 60Hz) |
| Expansion Slots | |
Slot | Details |
| PCIe x16 (CPU) | PCIe 5.0 x16 (Ryzen 9000/7000) |
| PCIe x16 (APU) | PCIe 4.0 x16 (Ryzen 8000) |
| PCIe x16 (Chipset) | PCIe 4.0 x4 |
| Storage | |
Type | Details |
| M.2 Slots | 2 × M.2 (Key M) |
| M.2_1 | PCIe 5.0 x4 (9000/7000) / PCIe 4.0 x4 (8000) |
| M.2_2 | PCIe 4.0 x4 / x2 (CPU dependent) |
| SATA Ports | 4 × SATA 6Gb/s |
| RAID Support | RAID 0/1/5/10 (CPU dependent) |
| Networking | |
Feature | Details |
| Ethernet | Realtek 2.5Gb LAN |
| Protection | ASUS LANGuard |
| USB Ports | |
| Rear I/O | |
USB Type | Count |
| USB 10Gbps (Type-A) | 2 |
| USB 5Gbps (Type-A) | 2 |
| USB 2.0 (Type-A) | 4 |
| Front / Internal | |
USB Type | Count |
| USB-C 5Gbps | 1 |
| USB 5Gbps Header | 2 ports |
| USB 2.0 Headers | 4 ports |
| Type-C Power | 5V / 3A |
| Audio | |
Feature | Details |
| Codec | Realtek 7.1 HD Audio |
| Max Quality | 24-bit / 192 kHz |
| Features | Shielding, premium capacitors, dedicated PCB |
| Back Panel I/O | |
Port | Count |
| USB 10Gbps | 2 |
| USB 5Gbps | 2 |
| USB 2.0 | 4 |
| DisplayPort | 1 |
| HDMI | 1 |
| Ethernet | 1 × 2.5Gb |
| Audio Jacks | 3 |
| BIOS FlashBack | 1 |
| PS/2 | 1 combo |
| Internal Connectors | |
Category | Count |
| CPU Fan Header | 1 |
| Chassis Fan Headers | 3 |
| RGB Headers | 3 × Addressable Gen 2 |
| Power Connectors | 24-pin ATX, 8-pin CPU |
| TPM Header | SPI TPM (14-1) |
| Front Panel | System, Audio, S/PDIF |
| Special Features | |
Category | Details |
| Protection | ASUS 5X Protection III |
| Cooling | M.2 Heatsink, VRM Heatsink |
| EZ DIY | BIOS FlashBack™, SafeSlot |
| RGB Sync | Aura Sync |
| Q-Design | Q-DIMM, Q-LED Core, Q-Slot |
| Software & BIOS | |
Feature | Details |
| BIOS | 256Mb UEFI AMI |
| BIOS Tools | EZ Flash 3, CrashFree BIOS 3 |
| Utilities | Armoury Crate, Fan Xpert 2+, AI Advisor |
| Bundled Software | Adobe CC Trial, Norton 360, WinRAR |
| Accessories | |
Item | Included |
| SATA Cables | 2 |
| I/O Shield | 1 |
| M.2 Screws & Rubber | 1 set |
| Documentation | Quick Start Guide |
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