ASUS PRIME B840-PLUS WIFI AMD B840 Socket AM5 ATX Motherboard
£171.85 inc VAT
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About This Item
- AMD B840 chipset supporting AMD Ryzen 7000/8000/9000 Series processors
- 4 DIMM slots supporting up to 192 GB DDR5-SDRAM with ECC compatibility
- 3 M.2 slots (2x Gen 4.0, 1x Gen 3.0) and 4 SATA III connectors
- ATX form factor with Wi-Fi 6E, 2.5Gb Ethernet and Bluetooth 5.3
- 7.1 channel audio and comprehensive connectivity including Thunderbolt header
- PCI Express 4.0 x16 and 3x Gen 3.x slots for expansion
- Windows 10 x64 and Windows 11 supported with UEFI AMI BIOS
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ASUS PRIME B840-PLUS WIFI | AMD B840 ATX Motherboard
The ASUS PRIME B840-PLUS WIFI AMD B840 Socket AM5 ATX is engineered for UK PC builders using AMD Ryzen 7000, 8000, and 9000 series processors. This board delivers essential performance features. It supports DDR5 memory and includes Wi-Fi 6E connectivity for modern setups. This motherboard suits users needing a reliable base for productivity and gaming.
Key Specifications at a Glance
| Metric | Spec. |
|---|---|
| Socket | AM5 |
| Chipset | AMD B840 |
| Memory | 4x DDR5 slots (Max 192GB) |
| M.2 Slots | 3x (2x PCIe 4.0, 1x PCIe 3.0) |
| Networking | Wi-Fi 6E & 2.5Gb Ethernet |
| Form Factor | ATX |
DDR5 Memory and Future-Proofing
This motherboard supports up to 192GB of DDR5 memory across four DIMM slots. You get dual-channel architecture for better bandwidth. It also supports both ECC and non-ECC unbuffered memory. This provides flexibility for different build requirements.
You can pair it with Ryzen 7000, 8000, or 9000 series CPUs. The AM5 socket ensures long-term upgrade potential. However, always confirm BIOS version for specific CPU support.
High-Speed Storage and RAID
You get three M.2 slots for fast NVMe storage. Two slots run at PCIe 4.0 speeds. The third runs at PCIe 3.0. This setup allows for rapid boot times and application loading.
It also includes four SATA III ports for HDDs or 2.5″ SSDs. So, you can mix fast NVMe drives with high-capacity storage. RAID levels 0, 1, 5, and 10 are supported for data redundancy or performance.
Modern Connectivity Options
The board features a comprehensive rear I/O panel. You get USB 3.2 Gen 2 Type-C and Type-A ports. There are also USB 3.2 Gen 1 and USB 2.0 ports for peripherals. A single HDMI and DisplayPort handle basic display output.
Onboard audio is 7.1 channel via S/PDIF out. The 2.5Gb Ethernet port provides a stable wired connection. Wi-Fi 6E and Bluetooth 5.3 are built-in for wireless needs. Note that a dedicated graphics card is required, as there is no onboard GPU.
DIY-Friendly Design and Cooling
ASUS Prime boards focus on ease of build. You get four chassis fan connectors and a CPU fan connector. This allows for comprehensive cooling control via UEFI BIOS. The BIOS itself is 256Mbit UEFI AMI.
The ATX form factor offers ample space for components. It includes a TPM connector for enhanced security. A chassis intrusion connector is also present. These features support a clean, organised build.
Box Contents
Box contents
- ASUS PRIME B840-PLUS WIFI motherboard
- 2x SATA 6Gb/s cables
- 1x Wi-Fi antenna
- M.2 screw package
- User guide
Check before you buy
- Confirm your CPU is from the AMD Ryzen 7000, 8000, or 9000 series.
- Verify your case fits an ATX (305 x 244 mm) motherboard.
- Check you have a dedicated graphics card, as there is no onboard GPU.
- Confirm your power supply has a 24-pin ATX connector.
Frequently Asked Questions
Q: Does this motherboard support PCIe 5.0?
A: No, the ASUS PRIME B840-PLUS WIFI supports PCIe 4.0 and PCIe 3.0 standards.
Q: Is a BIOS update needed for Ryzen 9000 series CPUs?
A: It depends on the manufacturing date. Always check the ASUS support page for the latest BIOS version.
Q: How many fans can I connect?
A: You can connect up to four chassis fans and one CPU fan directly to the motherboard.
Q: Does it support Windows 10?
A: Yes, it supports both Windows 10 x64 and Windows 11 operating systems.
The Consultant’s verdict & warranty
This motherboard is ideal for UK builders assembling a mid-range AMD system with modern features. It suits users who need DDR5 support, fast storage options, and integrated Wi-Fi 6E. It is a solid choice for productivity, content creation, and gaming.
Covered by the standard Manufacturer Warranty.
| Internal I/O | |
|---|---|
| Number of M.2 (M) slots | 3 |
| Thunderbolt headers | 1 |
| 12V power connector | Yes |
| Supported storage drive interfaces | M.2, SATA III |
| USB 2.0 connectors | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| TPM connector | Yes |
| S/PDIF out connector | Yes |
| Number of SATA III connectors | 4 |
| Number of COM connectors | 1 |
| Number of chassis fan connectors | 4 |
| Front panel audio connector | Yes |
| CPU fan connector | Yes |
| Chassis intrusion connector | Yes |
| ATX Power connector (24-pin) | Yes |
| Technical details | |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B840 |
| Supported processor sockets | Socket AM5 |
| Parallel processing technology support | Not supported |
| On-board graphics card | No |
| Motherboard form factor | ATX |
| Component for | PC |
| Audio | |
| Audio output channels | 7.1 channels |
| Performance | |
| Number of HDDs supported | 4 |
| Supported storage drive types | HDD & SSD |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B840 |
| RAID levels | 0, 1, 5, 10 |
| Supported processor sockets | Socket AM5 |
| Audio output channels | 7.1 channels |
| Motherboard form factor | ATX |
| Component for | PC |
| Processor | |
| Processor manufacturer | AMD |
| Compatible processor series | AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series |
| Supported processor sockets | Socket AM5 |
| Processor socket | Socket AM5 |
| Memory | |
| Number of memory slots | 4 |
| Memory slots type | DIMM |
| Supported memory types | DDR5-SDRAM |
| Memory channels | Dual-channel |
| Maximum internal memory | 192 GB |
| Unbuffered memory | Yes |
| ECC сompatibility | ECC & Non-ECC |
| Storage controllers | |
| Number of HDDs supported | 4 |
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | M.2, SATA III |
| RAID levels | 0, 1, 5, 10 |
| Number of storage drives supported | 7 |
| RAID support | Yes |
| Graphics | |
| Parallel processing technology support | Not supported |
| On-board graphics card | No |
| Rear panel I/O ports | |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 1 |
| USB 2.0 ports quantity | 4 |
| WiFi-AP antenna jack | 1 |
| HDMI ports quantity | 1 |
| Ethernet LAN (RJ-45) ports | 1 |
| DisplayPorts quantity | 1 |
| Network | |
| Ethernet LAN | Yes |
| Wi-Fi | Yes |
| Wi-Fi standards | Wi-Fi 6E (802.11ax) |
| Ethernet interface type | 2.5 Gigabit Ethernet |
| Bluetooth | Yes |
| Bluetooth version | 5.3 |
| Top Wi-Fi standard | Wi-Fi 6E (802.11ax) |
| Features | |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
| Motherboard chipset family | AMD |
| Motherboard chipset | AMD B840 |
| Supported processor sockets | Socket AM5 |
| Audio output channels | 7.1 channels |
| Motherboard form factor | ATX |
| Component for | PC |
| Product colour | Aluminium, Black |
| Expansion slots | |
| Number of M.2 (M) slots | 3 |
| PCI Express x1 (Gen 3.x) slots | 1 |
| PCI Express x16 (Gen 3.x) slots | 3 |
| PCI Express x16 (Gen 4.x) slots | 1 |
| 1st M.2 largest key size | 2280 |
| 1st M.2 highest PCI Express generation | 4.0 |
| 2nd M.2 largest key size | 2280 |
| 2nd M.2 highest PCI Express generation | 4.0 |
| 3rd M.2 largest key size | 2280 |
| 3rd M.2 highest PCI Express generation | 3.0 |
| BIOS | |
| BIOS type | UEFI AMI |
| BIOS memory size | 256 Mbit |
| Packaging data | |
| Package width | 353 mm |
| Package depth | 273 mm |
| Package height | 68 mm |
| Package weight | 1.26 kg |
| Software | |
| Windows operating systems supported | Windows 10 x64, Windows 11 |
| Weight & dimensions | |
| Package width | 353 mm |
| Package depth | 273 mm |
| Package height | 68 mm |
| Package weight | 1.26 kg |
| Width | 305 mm |
| Depth | 244 mm |
| Packaging content | |
| Cables included | SATA |
| Screws included | Yes |
| Antenna included | Yes |
| Other features | |
| Package width | 353 mm |
| Package depth | 273 mm |
| Package height | 68 mm |
| Package weight | 1.26 kg |
| Identifiers | |
| Distributor SKUs | MBD-90MB1IZ0-M0EAY0, 11508504, 126172, PRIME B840-PLUS WIFI, 542813, STD10218895, OS90MB1IZ0-M0EAY0 |
| Additional EANs | 0197105797277 |
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