Description
Overview
The ASUS PRIME B840-PLUS WIFI is an ATX motherboard for AMD Socket AM5 processors (Ryzen 7000, 8000 and 9000 series). It combines modern connectivity — Wi‑Fi 6E, Realtek 2.5Gb Ethernet and USB 10Gbps — with support for high‑speed DDR5 memory and multiple M.2 storage devices, making it suitable for mainstream gaming, content creation and general-purpose AM5 systems.
Key features
- AM5 socket, AMD B840 chipset — compatible with Ryzen™ 7000/8000/9000 desktop processors (check ASUS CPU support list for specific models).
- Memory: 4 x DIMM DDR5, up to 192GB; supports EXPO and ASUS Enhanced Memory Profile (AEMP); up to 7600+ MT/s (OC) depending on CPU and DIMMs.
- Storage: three M.2 slots (M.2_1 & M.2_2 support PCIe 4.0 x4; M.2_3 supports PCIe 3.0 x4) plus four SATA 6Gb/s ports.
- Expansion: 1 x PCIe 4.0 x16 SafeSlot Core+ for graphics; additional PCIe 3.0 slots for add‑in cards.
- Networking: onboard 2×2 Wi‑Fi 6E (2.4/5/6 GHz) and Bluetooth v5.3, plus Realtek 2.5Gb Ethernet with ASUS LANGuard.
- Rear I/O includes USB 10Gbps Type‑C and Type‑A, USB 5Gbps ports, DisplayPort, HDMI, BIOS FlashBack™ and pre‑mounted I/O shield.
Who this is for
The PRIME B840-PLUS WIFI suits builders who want an AM5 platform with modern connectivity and M.2 storage flexibility without stepping up to higher‑end X‑series boards. It is a good match for mainstream gaming builds, productivity PCs and small‑business desktops that need fast LAN and Wi‑Fi, multiple NVMe drives and DDR5 memory support.
Technical highlights & package
- Form factor: ATX (305 × 244 mm).
- Audio: Realtek 7.1 HD audio codec with audio shielding and PCB separation.
- USB: Rear — 2 x USB 10Gbps (1 Type‑C, 1 Type‑A), 2 x USB 5Gbps, 4 x USB 2.0; Internal — USB 5Gbps Type‑C connector + headers as specified by ASUS.
- Cooling & headers: VRM and M.2 heatsinks, multiple 4‑pin fan headers, AIO pump header, Fan Xpert support.
- Extras in box: motherboard, 2 x SATA 6Gb/s cables, ASUS Wi‑Fi Q‑Antenna, M.2 rubber, M.2 screw kits, quick start guide.
For up‑to‑date CPU and memory compatibility, and region‑specific wireless regulations, refer to ASUS support and the official product documentation.
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