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ASUS PRIME B840-PLUS WIFI AMD AM5 B840 ATX motherboard, Advanced AI Ready, DDR5, PCIe 4.0, 3x M.2, Wi-Fi 6E, 2.5Gb LAN, DisplayPort, HDMI, USB 10Gbps Type-A & Type-C, BIOS FlashBack, Aura Sync RGB

  • ROG STRIX B850-F GAMING WIFI
  • ROG STRIX B850-A GAMING WIFI
  • ROG STRIX B850-I GAMING WIFI
  • TUF GAMING B850-PLUS WIFI
  • TUF GAMING B850M-PLUS WIFI
  • PRIME B840-PLUS WIFI
  • PRIME B840M-A WIFI-CSM
  • Ready for Advanced AI PC: Designed for the future of AI computing, with the power and connectivity needed for demanding AI applications
  • AMD AM5 Socket: Ready for AMD Socket AM5 for AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors
  • Enhanced Power Solution: 6-layer PCB, alloy chokes and durable capacitors for stable power delivery
  • Ultrafast Connectivity: Wi-Fi 6E, PCIe 4.0 x16 slot, PCIe 4.0 M.2 slots, Realtek 2.5Gb Ethernet, rear USB 10Gbps Type-A & Type-C ports, and front USB 5Gbps Type-C support
  • Comprehensive Cooling: VRM and M.2 heatsinks, PCH heatsink, hybrid fan headers and Fan Xpert 2+
  • DIY Friendly Design: Pre-mounted I/O shield, BIOS FlashBack, M.2 heatsink, Q-Antenna, Q-Dashboard, Q-LED Core
  • Unmatched Personalization: Three Addressable Gen 2 headers, all configurable with ASUS-exclusive Aura Sync RGB lighting
  • Renowned Software: Armoury Crate, ASUS DriverHub, ASUS GlideX, ASUS MyHotkey
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Specs
Reviews

Learn more about the ASUS PRIME B840-PLUS WIFI

Model
Brand ASUS
Model PRIME B840-PLUS WIFI
Part Number 90MB1IZ0-M0AAY0
Supported CPU
CPU Socket Type AM5
CPU Type Ryzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
Chipsets
Chipset AMD B840
Memory
Number of Memory Slots 4x288pin (DDR5)
Memory Standard Up to 7600+MT/s (OC)
Maximum Memory Supported 192GB
Channel Supported Dual Channel
ECC Supported Yes
Buffer Supported Un-buffered
Memory Feature Dual channel memory architecture
Supports AMD Extended Profiles for Overclocking (EXPO)
ASUS Enhanced Memory Profile (AEMP)
Expansion Slots
PCI Express 4.0 x16 AMD Ryzen 9000 & 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)
PCI Express 3.0 x16 AMD B840 Chipset
1 x PCIe 3.0 x16 slot (support x4 mode)***
2 x PCIe 3.0 x16 slots (support x1 mode)***

*** 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.
PCI Express x1 1 x PCIe 3.0 x1 slot***
Storage Devices
Serial ATA (SATA) 4 x SATA 6Gb/s
M.2 AMD Ryzen 9000 & 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
SATA RAID AMD RAIDXpert2 Technology supports both PCIe RAID 0/1/5/10 and SATA RAID 0/1.
*RAID 5 Function is only supported by AMD Ryzen 9000 series CPU.
Onboard LAN
Max LAN Speed 2.5Gbps
Wireless LAN Wi-Fi 802.11 ax
Bluetooth Bluetooth 5.3
Rear Panel Ports
Back 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 button
Internal I/O Connectors
Onboard 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
Other 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

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) header
Physical Spec
Form Factor ATX
Dimensions (W x L) 12.0" x 9.6"
Power Pin 1 x 24-pin Main Power connector
1 x 8-pin +12V CPU Power connectors
1 x 4-pin +12V CPU Power connectors
Software Feature
BIOS Feature 256 Mb Flash ROM, UEFI AMI BIOS
Software ASUS Exclusive Software
Armoury Crate
- Aura Creator
- Aura Sync
- Fan Xpert 2+
- Power Saving
ASUS Driver Hub
ASUS GlideX
TurboV Core
ASUS CPU-Z
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 MyHotkey
Windows 11 Windows 11, Windows 10 64-bit
Features
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 headers
Packaging
Package Contents Cables
2 x SATA 6Gb/s cables

Miscellaneous
1 x ASUS WiFi Q-Antenna
2 x M.2 rubber packages
2 x Screw packages for M.2 SSD

Documentation
1 x Quick start guide
Additional Information
Date First Available January 06, 2025

Warranty & Returns

Warranty, Returns, And Additional Information

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