Asus PRIME B840-PLUS WIFI AMD Ryzen AM5 4-DDR5 DP HDMI M.2 SATA 2.5Gb-ETH BT ATX
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Asus PRIME B840-PLUS WIFI AMD Ryzen AM5 4-DDR5 DP HDMI M.2 SATA 2.5Gb-ETH BT ATX









Asus PRIME B840-PLUS WIFI AMD Ryzen AM5 4-DDR5 DP HDMI M.2 SATA 2.5Gb-ETH BT ATX
Asus PRIME B840-PLUS WIFI
CPU: AMD Socket AM5 for AMD Ryzen™ 9000 & 8000 & 7000 Series Desktop Processors*
Chipset: AMD B840 Chipset
Memory
- 4 x DIMM slots, max. 192GB, DDR5 Supports up to 7600+MT/s (OC) with Ryzen™ 9000 & 8000 & 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@30Hz as specified in DisplayPort 1.4.
*** Supports 4K@60Hz as specified in HDMI 2.1.
Expansion Slots
- 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)**
- 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 & 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) Specifications vary by CPU types.
- 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
- AMD RAIDXpert2 Technology
- Ryzen™ 9000 Series Processors: RAID 0/1/5/10
- Ryzen™ 8000 Series Processors: RAID 0/1
- Ryzen™ 7000 Series Processors: RAID 0/1/10
Ethernet
- 1 x Realtek 2.5Gb Ethernet
- ASUS LANGuard
Wireless & 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 manufacturer's 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/3A
Audio
- 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™ button
Internal 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®) header
Special 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
Software 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 MyHotkey
BIOS: 256 Mb Flash ROM, UEFI AMI BIOS
Manageability: WOL by PME, PXE
Accessories
- 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 guide
Operating System: Windows® 11, Windows® 10 64-bit
Form Factor
- ATX Form Factor
- 12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )
Shipping Notes:
All our products are normally shipped within 1-2 business days from any of our warehouse locations below:
- Monrovia, CA 91016 (Most usual)
- Fremont, CA 94538
- Richardson, TX 75018
- Duluth, GA 30096
- Itasca, IL 60143
- Edison, NJ 08837
International orders may take an additional 2 to 3 days.
California Prop 65 Warning. This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Visit www.P65Warnings.ca.gov
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