Asus
Asus Prime B840-PLUS WIFI Gaming Desktop Motherboard - AMD B840 Chipset - Socket AM5 - ATX (90mb1iz0-m0aay0)
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- SKU:
- 20986997
- MPN:
- 90mb1iz0-m0aay0
- Availability:
- Usually ships the same or next business day.
- Shipping:
- Calculated at Checkout
- Stock Update:
- 03/14/2026 09:10:46 PM PST
- Stock Update:
- 03/14/2026 09:10:46 PM PST
Description
This item is brand-new, factory sealed.
PrimeB840-PLUS WIFI
ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen 9000 series processors. The PRIME B840-PLUS WIFI motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. Its designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications. CEC Tier II ready
Performance
AI Solutions
ASUS AI Solutions include AI Advisor as your technical expert with expertise in PC performance.
AI Advisor
ASUS AI Advisor allows users to explore the functionality and advanced features of ASUS motherboards in a simple and straightforward way.
Performance
Digital Power Design
PRIME B840-PLUS WIFI features an 8+2+1 phase power design with discrete MOSFETs, ensuring efficient and stable power delivery for AMD processors plus steady performance for day-to-day use.Model
PRIME B840-PLUS WIFINews and Updates
Socket AM5
Please visit our GLOBAL website to check and download the latest updates.CPU
AMD Socket AM5 for AMD Ryzen 9000 and 8000 and 7000 Series Desktop Processors
Refer to https://www.asus.com/support/download-center/ for CPU support list.Chipset
AMD B840 ChipsetMemory
4 x DIMM slots, max. 256GB, DDR5 Supports up to 7600+MT/s (OC) with Ryzen 9000 and 8000 and 7000 Series Processors, ECC and Non-ECC Un-buffered DIMM
Dual channel memory architecture
Supports AMD Extended Profiles for Overclocking (EXPO)
ASUS Enhanced Memory Profile (AEMP)
Supported memory types, data rate (speed), and number of DRAM modules vary depending on the CPU and memory configuration, for more information please refer to CPU/Memory Support list under the Support tab of product information site or visit https://www.asus.com/support/download-center/. Adjustments will be made based on the specifications of mass-produced memory products available on the market.
Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.Graphics
1 x DisplayPort
1 x HDMI port
Graphics specifications may vary between CPU types. Please refer to AMD CPU specifications.
Supports max. 8K at 30Hz as specified in DisplayPort 1.4.
Supports 4K at 60Hz as specified in HDMI 2.1.Expansion Slots
AMD Ryzen 9000 and 7000 Series Desktop Processors
1 x PCIe 4.0 x16 slot (supports x16 mode)
AMD Ryzen 8000 Series Desktop Processors
1 x PCIe 4.0 x16 slot (supports x8/x4 mode)
AMD B840 Chipset
1 x PCIe 3.0 x16 slot (support x4 mode)
2 x PCIe 3.0 x16 slots (support x1 mode)
1 x PCIe 3.0 x1 slot
Please check the PCIe bifurcation table on the support site (https://www.asus.com/support/FAQ/1037507/).
Specifications vary by CPU types.
The PCIEX16(G3)_1/3 and PCIEX1(G3) share bandwidth with PCIEX16(G3)_2. The PCIEX16(G3)_2 will run x1 mode when any of the PCIEX16(G3)_1/3 and PCIEX1(G3) slots is occupied.
- To ensure compatibility of the device installed, please refer to https://www.asus.com/support/download-center/ for the list of supported peripherals.Storage
Supports 3 x M.2 slots and 4 x SATA 6Gb/s ports
AMD Ryzen 9000 and 7000 Series Desktop Processors
M.2_1 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
M.2_2 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
AMD Ryzen 8000 Series Desktop Processors
M.2_1 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
M.2_2 slot (Key M), type 2280 (supports PCIe 4.0 x4/x2 mode)
AMD B840 Chipset
M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 mode
4 x SATA 6Gb/s ports
Specifications vary by CPU types.
AMD RAIDXpert2 Technology
Ryzen 9000 Series Processors: RAID 0/1/5/10
Ryzen 8000 Series Processors: RAID 0/1
Ryzen 7000 Series Processors: RAID 0/1/10Ethernet
1 x Realtek 2.5Gb Ethernet
ASUS LANGuardWireless and Bluetooth
"Wi-Fi 6E
2x2 Wi-Fi 6E (802.11ax)
Supports 2.4/5/6GHz frequency band
Bluetooth v5.3
WiFi 6E 6GHz regulatory may vary between countries, supported only in Windows 11 or later.
The Bluetooth version may vary, please refer to the Wi-Fi module manufacturers website for the latest specifications."USB
Rear USB (Total 8 ports)
2 x USB 10Gbps port(s) (1 x Type-A + 1 x USB Type-C)
2 x USB 5Gbps ports (2 x Type-A)
4 x USB 2.0 ports (4 x Type-A)
Front USB (Total 7 ports)
1 x USB 5Gbps connector (supports USB Type-C)
1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports
USB Type-C power delivery output: max. 5V/3AAudio
Realtek 7.1 Surround Sound High Definition Audio CODEC
- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking
- Supports up to 24-Bit/192 kHz playback
Audio Features
- Audio Shielding
- Premium audio capacitors
- Dedicated audio PCB layers
A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.Back Panel I/O Ports
1 x USB 10Gbps port (1 x USB Type-C)
1 x USB 10Gbps port (1 x Type-A)
2 x USB 5Gbps ports (2 x Type-A)
4 x USB 2.0 ports (4 x Type-A)
1 x DisplayPort
1 x HDMI port
1 x Wi-Fi module
1 x Realtek 2.5Gb Ethernet port
3 x Audio jacks
1 x BIOS FlashBack buttonInternal I/O Connectors
Fan and Cooling Related
1 x 4-pin CPU Fan header
1 x 4-pin CPU OPT Fan header
1 x 4-pin AIO Pump header
4 x 4-pin Chassis Fan header
Power Related
1 x 24-pin Main Power connector
1 x 8-pin +12V CPU Power connectors
1 x 4-pin +12V CPU Power connectors
Storage Related
3 x M.2 slots (Key M)
4 x SATA 6Gb/s ports
USB
1 x USB 5Gbps connector (supports USB Type-C )
1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports
Miscellaneous
3 x Addressable Gen 2 headers
1 x Clear CMOS header
1 x Chassis Intrusion header
1 x COM Port header
1 x Front Panel Audio header (F_AUDIO)
1 x S/PDIF Out header
1 x SPI TPM header (14-1 pin)
1 x 10-1 pin System Panel header
1 x Thunderbolt (USB4) headerSpecial Features
ASUS 5X PROTECTION III
- DIGI+ VRM
- LANGuard
- Overvoltage protection
- SafeSlot core+
- Stainless-steel back I/O
ASUS Q-Design
- Q-Antenna
- Q-Dashboard
- Q-DIMM
- Q-LED Core
- Q-Slot
ASUS Thermal Solution
- Flexible M.2 heatsink
- VRM heatsink design
ASUS EZ DIY
- BIOS FlashBack button
- BIOS FlashBack LED
- Pre-mounted I/O shield
- SafeSlot core+
Aura Sync
- Addressable Gen 2 headersSoftware Features
ASUS Exclusive Software
Armoury Crate
- Aura Creator
- Aura Sync
- Fan Xpert 2+
- Power Saving
ASUS Driver Hub
ASUS GlideX
TurboV Core
ASUS CPU-Z
Adobe Creative Cloud (Free Trial)
Norton 360 Deluxe (60 Days Free Trial)
WinRAR (40 Days Free Trial)
UEFI BIOS
ASUS EZ DIY
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 3
- ASUS UEFI BIOS EZ Mode
- ASUS MyHotkeyBIOS
256 Mb Flash ROM, UEFI AMI BIOSManageability
WOL by PME, PXEAccessories
Cables
2 x SATA 6Gb/s cables
Miscellaneous
1 x ASUS WiFi Q-Antenna
1 x M.2 rubber packages
3 x Screw packages for M.2 SSD
Documentation
1 x Quick start guideOperating System
Windows 11, Windows 10 64-bit
Features
Package Contents:
Restriction of Hazardous Substances (RoHS)
China
- Prime B840-PLUS WIFI Gaming Desktop Motherboard
- 2 x SATA 6Gb/s cables
- 1 x ASUS WiFi Q-Antenna
- 1 x M.2 rubber packages
- 3 x Screw packages for M.2 SSD
- 1 x Quick start guide
Environmental Compliance:
Restriction of Hazardous Substances (RoHS)
Country of Origin:
China
Specs
| Physical Characteristics | |
| Form Factor | ATX |
| Width | 12" |
| Depth | 9.6" |
| Warranty | |
| Limited Warranty | 3 Year |
| I/O Expansions | |
| Number of PCI Express x1 Slots | 1 |
| Total Number of Expansion Slots | 6 |
| PCI Express Standard |
|
| Number of PCI Express x16 Slots | 5 |
| Total Number of PCI Express Slots | 6 |
| Memory | |
| Memory Technology | DDR5 SDRAM |
| Number of Memory Slots | 4 |
| Memory Speed Supported | 7600 MHz |
| Memory Form Factor |
|
| Maximum Memory Supported | 192 GB |
| Error Checking | ECC |
| General Information | |
| Brand Name | Asus |
| Manufacturer Website Address | http://usa.asus.com |
| Marketing Information | PRIME B840-PLUS WIFI ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen ™ 9000 series processors. The PRIME B840-PLUS WIFI motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It's designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications. Performance AI Solutions ASUS AI Solutions include AI Advisor as your technical expert with expertise in PC performance. AI Advisor ASUS AI Advisor allows users to explore the functionality and advanced features of ASUS motherboards in a simple and straightforward way. Performance Digital Power Design PRIME B840-PLUS WIFI features an 8+2+1 phase power design with discrete MOSFETs, ensuring efficient and stable power delivery for AMD processors plus steady performance for day-to-day use. 8 Vcore power 2 SOC power 1 Misc power The multi-layered printed circuit board design quickly dissipates heat around the voltage regulators to improve overall system stability and provide the CPU with more overclocking headroom. The Power Saving function contains several settings to easily optimize power consumption and maximize energy savings. You can enable a CPU power limit, darken Aura lighting and set the fan profile to a Power Saving mode. You can also toggle the Power Saver plan that is built into Microsoft Windows. The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings. Enhanced Memory & Storage Performance | Enhanced DDR5 performance Comprehensive memory tuning options are the cornerstone of PRIME motherboards. The PRIME B840-PLUS WIFI maximizes the potential of your DDR5 modules, from entry-level to extreme-speed kits.1 For entry-level modules without EXPO™ support, ASUS Enhanced Memory Profile (AEMP) automatically detects memory chips and provides optimized profiles for enhanced performance. For those looking to surpass stock DDR5 speeds, the PRIME B840-PLUS WIFI offers extensive AMD Extended Profiles for Overclocking (EXPO™) support and a wide array of UEFI settings for further performance tweaks. Three M.2 slots (up to 64 Gbps) PRIME B840-PLUS WIFI offers a total of three M.2 slots, including two that support data-transfer speeds of up to 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. Cooling | Cooler by design The PRIME B840-PLUS WIFI motherboard is engineered with multiple onboard heatsinks and an array of hybrid fan headers to help ensure your rig stays cool and stable under intense workloads. Smart Cooling precision | ASUS Fan Xpert 2+ ASUS Fan Xpert 2+ software provides comprehensive control over fans. An Auto-Tuning mode intelligently configures all parameters with a single click. There's also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS. |
| Product Type | Gaming Desktop Motherboard |
| Product Name | Prime B840-PLUS WIFI Gaming Desktop Motherboard |
| Manufacturer | ASUS Computer International |
| Manufacturer Part Number | PRIME B840-PLUS WIFI |
| Product Model | B840-PLUS WIFI |
| Product Line | Prime |
| Packaged Quantity | 1 |
| Processor & Chipset | |
| Chipset Manufacturer | AMD |
| Processor Supported |
|
| Total Processor Supported | 1 |
| Processor Socket | Socket AM5 |
| Chipset Model | B840 |
| Technical Information | |
| AI-powered | Yes |
| Onboard Interfaces | |
| Number of SATA Interfaces | 4 |
| Total Number of Onboard USB Ports | 7 |
| Number of M.2 Interfaces | 3 |
| Number of Onboard USB 2.0 Ports | 4 |
| Interfaces/Ports | |
| S/PDIF | Yes |
| HDMI Version | <li>2.1</li> |
| DisplayPort | Yes |
| Number of Thunderbolt 4 Ports | 2 |
| HDMI | Yes |
| Total Number of USB Ports | 8 |
| Thunderbolt | Yes |
| Number of Network (RJ-45) Ports | 1 |
| I/O Controller | |
| RAID Supported | Yes |
| Controller Type | Serial ATA/600 |
| RAID Levels |
|
| Video | |
| Onboard Video | CPU Dependent Video |
| Network & Communication | |
| Wireless LAN | Yes |
| Wireless LAN Standard | IEEE 802.11ax |
| Bluetooth | Yes |
| Bluetooth Standard | Bluetooth 5.3 |
| 2.5Gigabit Ethernet | Yes |
| Gigabit Ethernet | Yes |
| Audio | |
| Audio Channels | 7.1 |
Warranty Information
All Items are Brand New, Factory Sealed and come with a standard warranty. [Read our policies]
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Asus Prime B840-PLUS WIFI Gaming Desktop Motherboard - AMD B840 Chipset - Socket AM5 - ATX (90mb1iz0-m0aay0)
$216.87