Build on AM5.
Stay ready for what comes next.
The PRIME B850-PLUS WIFI gives a full-size ATX build a modern AMD foundation: Ryzen 9000, 8000 and 7000 Series support, DDR5, PCIe 5.0-ready expansion, fast wired networking and WiFi 6E.
The right foundation for a flexible AM5 build.
Balance memory capacity, high-speed storage and network reach without turning the build into a maze of add-in cards.
Memory with room to grow
Four dual-channel DDR5 DIMM slots support up to 256GB, with AMD EXPO and ASUS AEMP tuning and speeds up to 8000+MHz (OC).
Fast graphics and storage paths
With Ryzen 9000 or 7000 Series processors, the primary graphics slot runs at PCIe 5.0 x16 and the primary M.2 slot supports PCIe 5.0 x4.
Connected without an add-on
2x2 WiFi 6E, Bluetooth 5.3 and Realtek 2.5Gb Ethernet cover wireless peripherals, fast LAN and tri-band WiFi connectivity.
Supported memory speed, PCIe mode and wireless functionality depend on the installed CPU, memory configuration, operating system and regional regulations.
Steady delivery. Sensible cooling.
An 8+2+1 digital power design sits beneath substantial VRM heatsinks and thermal pads, while dedicated storage and chipset cooling help manage long transfers and everyday workloads.
A rear panel that arrives ready.
Eight rear USB ports span 10Gbps, 5Gbps and USB 2.0 devices, while display, audio, wireless and wired networking are already on the board.
Plan the build with the lane map in view.
The board is flexible by design, and clear CPU-dependent paths make it easier to choose the right processor, drives and expansion cards.
PCIe mode follows the CPU
Ryzen 9000/7000 enables PCIe 5.0 x16. Ryzen 8000 changes the primary slot to PCIe 4.0 at x8/x4.
Three M.2 plus four SATA
The primary M.2 reaches PCIe 5.0 x4 with Ryzen 9000/7000; Ryzen 8000 uses PCIe 4.0. The third M.2 is chipset-connected at PCIe 4.0 x2.
Up to nine front USB ports
Headers support one USB 5Gbps Type-C, two additional USB 5Gbps ports and six USB 2.0 ports.
Realtek 7.1 HD sound
The codec supports up to 24-bit/192kHz playback, with audio shielding, premium capacitors and dedicated PCB layers.
DP 1.4 and HDMI 2.1
DisplayPort supports up to 8K at 30Hz and HDMI up to 4K at 60Hz. Actual graphics support depends on the installed CPU.
Three ARGB Gen 2 headers
Aura Sync support brings compatible lighting into one control layer without consuming rear connectivity.
Lane-sharing note: the two physical PCIe 3.0 x16 slots operate at x1 and share bandwidth with SATA6G_1/2; using either slot can disable its paired SATA port.
Less friction between parts and first boot.
Practical touchpoints help with assembly, diagnosis and future maintenance before software ever enters the picture.
What arrives in the box.
- ASUS WiFi Q-Antenna
- Two SATA 6Gb/s cables
- Three M.2 screw packages and M.2 rubber packages
- Quick-start guide
One board for a clean, connected AM5 build.
AMD B850, DDR5, PCIe 5.0-ready expansion, three M.2 slots, WiFi 6E and 2.5Gb Ethernet in an ATX layout designed for straightforward assembly.
| SPECIFICATIONS | |
| Brand | ASUS |
| Series | PRIME |
| Model | PRIME B850-PLUS WIFI |
| Cpu | |
| CPU Socket | AMD Socket AM5 |
| Supported Processors | AMD Ryzen 9000, 8000 and 7000 Series Desktop Processors |
| CPU Support Note | Supports up to 170W CPUs; refer to the ASUS CPU support list for compatibility |
| Chipset | |
| Chipset | AMD B850 |
| Memory | |
| Memory Slots | 4 x DIMM Slots |
| Maximum Memory Capacity | 256GB |
| Memory Type | DDR5 |
| Supported Memory Speed | Up to 8000+MHz (OC) |
| Memory Architecture | Dual-Channel Memory Architecture |
| Memory Overclocking | AMD EXPO and ASUS AEMP |
| Memory Features | ECC and Non-ECC Unbuffered DIMM Support |
| Memory Type Note | Non-ECC Unbuffered DDR5 Supports On-Die ECC |
| Memory Support Note | Supported memory type, speed and module count vary by CPU and memory configuration |
| Integrated Graphics | |
| DisplayPort Output | 1 x DisplayPort 1.4 |
| HDMI Output | 1 x HDMI 2.1 |
| DisplayPort Maximum Resolution | Up to 7680 x 4320 at 30Hz |
| HDMI Maximum Resolution | Up to 3840 x 2160 at 60Hz |
| Graphics Support Note | Graphics specifications vary by CPU type |
| Expansion Slots | |
| AMD Ryzen 9000 And 7000 Series Processors | 1 x PCIe 5.0 x16 Slot (x16 Mode) |
| AMD Ryzen 8000 Series Processors | 1 x PCIe 4.0 x16 Slot (x8/x4 Mode) |
| AMD B850 Chipset | 1 x PCIe 4.0 x16 Slot (x4 Mode); 2 x PCIe 3.0 x16 Slots (x1 Mode) |
| Expansion Slot Note | The PCIe 3.0 x16 slots share bandwidth with SATA6G_1/2; the corresponding SATA port is disabled when either slot is used |
| Storage | |
| Total M.2 Slots | 3 |
| Total SATA Ports | 4 x SATA 6Gb/s Ports |
| Storage Support With AMD Ryzen 9000 And 7000 Series Processors | |
| M.2_1 Slot | Key M Type 2280, PCIe 5.0 x4 |
| M.2_2 Slot | Key M Type 2280, PCIe 4.0 x4 |
| Storage Support With AMD Ryzen 8000 Series Processors | |
| M.2_1 Slot | Key M Type 2280, PCIe 4.0 x4 |
| M.2_2 Slot | Key M Type 2280, PCIe 4.0 x4/x2 |
| RAID Support | |
| RAID Technology | AMD RAIDXpert2 Technology |
| AMD Ryzen 9000 Series | RAID 0, 1, 5 and 10 |
| AMD Ryzen 8000 Series | RAID 0 and 1 |
| AMD Ryzen 7000 Series | RAID 0, 1 and 10 |
| Ethernet | |
| Ethernet Controller | Realtek 2.5Gb Ethernet |
| Ethernet Port | 1 x RJ-45 |
| Ethernet Protection | ASUS LANGuard |
| Wireless And Bluetooth | |
| Wireless Controller | 2x2 Wi-Fi 6E |
| WiFi Standard | Wi-Fi 6E (802.11ax) |
| Frequency Bands | 2.4GHz, 5GHz and 6GHz |
| Bluetooth | Bluetooth 5.3 |
| Operating System Note | 6GHz Operation Requires Windows 11 or Later |
| Regional Note | 6GHz Availability Varies by Country |
| Bluetooth Note | Bluetooth Version May Vary by Wireless Module |
| Rear USB Ports | |
| Total Rear USB Ports | 8 |
| USB 10Gbps Ports | 4 Ports: 3 x Type-A and 1 x Type-C |
| Front USB Connectivity | |
| Total Supported Front USB Ports | 9 |
| USB 5Gbps Type-C Connector | 1 Connector Supports 1 x USB Type-C Port |
| USB 5Gbps Header | 1 Header Supports 2 Additional USB 5Gbps Ports |
| USB 2.0 Headers | 3 Headers Support 6 Additional USB 2.0 Ports |
| Front USB Type-C Power Delivery | Up to 5V/3A |
| Audio | |
| Audio Codec | Realtek 7.1 Surround Sound High Definition Audio CODEC |
| Audio Channels | 7.1 Surround Sound |
| Playback Quality | Up to 24-Bit/192kHz |
| Audio Functions | Jack Detection, Multi-Streaming and Front-Panel Jack Retasking |
| Audio Features | Audio Shielding, Premium Audio Capacitors and Dedicated Audio PCB Layers |
| 7.1 Audio Note | 7.1-Channel Output Requires a Chassis with a Front-Panel HD Audio Module |
| Back Panel I/O Ports | |
| USB 10Gbps Ports | 1 x Type-C and 3 x Type-A |
| USB 5Gbps Ports | 2 x Type-A |
| USB 2.0 Ports | 2 x Type-A |
| Display Output | 1 x DisplayPort and 1 x HDMI |
| Wireless Connections | 1 x Wi-Fi Module |
| Network Port | 1 x Realtek 2.5Gb Ethernet Port |
| Analogue Audio | 3 x Audio Jacks |
| Rear Buttons | 1 x BIOS FlashBack Button |
| Internal Fan And Cooling Connectors | |
| CPU Fan Header | 1 x 4-Pin |
| CPU Optional Fan Header | 1 x 4-Pin |
| AIO Pump Header | 1 x 4-Pin |
| Chassis Fan Headers | 4 x 4-Pin |
| Internal Power Connectors | |
| Main Power Connector | 1 x 24-Pin |
| CPU Power Connectors | 1 x 8-Pin +12V and 1 x 4-Pin +12V |
| Internal Storage Connectors | |
| M.2 Slots | 3 x Key M |
| SATA Ports | 4 x SATA 6Gb/s |
| Internal USB Connectors | |
| USB 5Gbps Type-C Connector | 1 |
| USB 5Gbps Header | 1 Header Supports 2 Ports |
| USB 2.0 Headers | 3 Headers Support 6 Ports |
| Other Internal Connectors | |
| Addressable RGB Headers | 3 x Addressable RGB Gen 2 |
| Clear CMOS Header | 1 |
| Chassis Intrusion Header | 1 |
| COM Port Header | 1 |
| Front-Panel Audio Header | 1 |
| S/PDIF Out Header | 1 |
| SPI TPM Header | 1 x 14-1-Pin |
| Front-Panel System Header | 1 x 10-1-Pin |
| Thunderbolt Header | 1 x Thunderbolt (USB4) Header |
| Power Design | |
| Power Stages | 8+2+1 Phase Digital Power Design |
| CPU Power Design | DIGI+ VRM |
| ASUS Q-Design Features | |
| Features | Q-Antenna, Q-Dashboard, Q-DIMM, Q-LED Core and Q-Slot |
| ASUS Thermal Solution | |
| Cooling Features | Flexible M.2 Heatsink and VRM Heatsink Design |
| ASUS EZ DIY Features | |
| Features | BIOS FlashBack Button and LED, Pre-Mounted I/O Shield and SafeSlot |
| Lighting | |
| Lighting Ecosystem | ASUS Aura Sync |
| Lighting Headers | 3 x Addressable RGB Gen 2 Headers |
| ASUS Software | |
| Armoury Crate Features | Aura Creator, Aura Sync, Fan Xpert 2+ and Power Saving |
| Additional ASUS Software | ASUS AI Advisor, ASUS DriverHub, ASUS GlideX, TurboV Core and ASUS CPU-Z |
| Trial Software | Adobe Creative Cloud Free Trial, Norton 360 Deluxe 60-Day Free Trial and WinRAR 40-Day Free Trial |
| UEFI BIOS Features | |
| ASUS EZ DIY Features | ASUS CrashFree BIOS 3, ASUS EZ Flash 3 and ASUS UEFI BIOS EZ Mode |
| Additional BIOS Feature | ASUS MyHotkey |
| Bios | |
| BIOS Memory | 256Mb Flash ROM |
| BIOS Type | UEFI AMI BIOS |
| Manageability | |
| Management Features | WOL by PME and PXE |
| Accessories - Cables | |
| Included Cables | 2 x SATA 6Gb/s Cables |
| Accessories - Miscellaneous | |
| Wireless Antenna | 1 x ASUS WiFi Q-Antenna |
| M.2 Accessories | 1 x M.2 Rubber Package and 3 x M.2 SSD Screw Packages |
| Documentation | |
| Included Documentation | 1 x Quick Start Guide |
| Operating System | |
| Supported Operating System | Windows 11 and Windows 10 64-Bit |
| Form Factor | |
| Form Factor | ATX |
| Dimensions | 30.5cm x 24.4cm |
| ASUS 5X Protection III Features | |
| Features | DIGI+ VRM, LANGuard, Overvoltage Protection, SafeSlot and Stainless-Steel Back I/O |
| Storage Support From AMD B850 Chipset | |
| M.2_3 Slot | Key M Type 2242/2260/2280/22110, PCIe 4.0 x2 |
| Warranty Information | |
| Warranty | 3 Year Warranty |
| Manufacturer's Site | Visit the manufacturer's website |
|---|---|
| Product Link | Visit the manufacturer's page for this product |
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