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Built to last
The ASUS Prime B840-PLUS motherboard is engineered to unleash the capabilities of AMD Ryzen™ 9000 series processors with a strong power setup, advanced cooling, and user-friendly tuning options. Packed with four M.2 slots, it offers ample room for high-speed storage, while PCIe® 4.0 x16 support gears it for modern graphics. Built for the future, it provides a combination of legacy and modern USB connections, ideal for gaming setups. With intuitive software and firmware, it’s crafted for PC builders aiming for high and reliable performance.
Robust Architecture
Stable power is crucial for squeezing max performance from AMD processors. It features 8 + 2 + 1 power stages that integrate high-side and low-side MOSFETs and drivers into packages rated equally. This configuration ensures optimal power delivery, efficiency, stability and performance for both current and future AMD processors.
DDR5 Domination
ASUS Enhanced Memory Profile (AEMP) automatically detects memory chips and provides optimised profiles for enhanced performance. For those looking to surpass stock DDR5 speeds, the PRIME B840-Plus offers extensive AMD Extended Profiles for Overclocking (EXPO™) support and a wide array of UEFI settings for further performance tweaks.
Loaded With M.2 Slots
PRIME B840-Plus offers a total of three M.2 slots, including two that support 64 Gbps via PCIe 4.0, and one that supports PCIe 3.0. This enables quicker boot-up and app load times with OS or application drives.
Great for Beginner Builds
The PRIME B840-Plus motherboard introduces EZ PC DIY features that streamline the building process for convenience and speed. A physical lever unlocks the first PCIe slot’s security latch with a single tap, simplifying the removal of graphics cards or other devices during upgrades. The ASUS Q-Latch offers tool-free M.2 SSD installation, using a simple locking mechanism for easy drive attachment and removal. Additionally, the Q-LED Core display provides color-coded lights during the Power-On Self-Test (POST), assisting with quick troubleshooting of potential issues.
Pre-Mounted I/O Shield
The pre-installed I/O shield safeguards ports, simplifies the build process, increases functionality and enhances aesthetics for PC DIY enthusiasts.
BIOS Flashback™
BIOS FlashBack™ simplifies BIOS updates. Just load the BIOS file onto a FAT32 USB stick, insert it into the port, and press a button—no CPU or memory needed.
PCIe Safe Slot
ASUS have adapted SMT manufacturing for the faster SafeSlot, a reinforced metal lining that ensures secure card installation and faster data speeds.
Link Up With Ease
This motherboard offers extensive connectivity, with a well-organised layout that makes linking all your components a breeze. The stylish backplate not only adds a sleek touch but also reinforces the build for added stability. With its intuitive design, it’s perfect for beginners looking to dive into PC building, offering a user-friendly experience without compromising on quality or capability.
Internal I/O | |
---|---|
Number of M.2 (M) slots | 3 |
Thunderbolt headers | 1 |
USB 3.2 Gen 2 (3.1 Gen 2) connectors | 0 |
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 |
mSATA ports quantity | 0 |
TPM connector | Yes |
S/PDIF out connector | Yes |
Number of SATA connectors | 0 |
Number of SATA III connectors | 4 |
Number of SATA II connectors | 0 |
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 1 (3.1 Gen 1) Type-C ports quantity | 0 |
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 |
VGA (D-Sub) ports quantity | 0 |
HDMI ports quantity | 1 |
Ethernet LAN (RJ-45) ports | 1 |
DVI-D ports quantity | 0 |
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 |
mSATA ports quantity | 0 |