MSI B840 Gaming Plus Wifi Motherboard

CPU

Supports AMD Ryzen™ 9000/ 8000/ 7000 Series Desktop Processors

Socket AM5

Chipset

AMD B840

Memory

4x DDR5 UDIMM, Maximum Memory Capacity 256GB

Memory Support DDR5 8000 - 5600 (OC) MT/s / 5600 - 4800 (JEDEC) MT/s

Ryzen™ 9000 Series Processors max. overclocking frequency:

• 1DPC 1R Max speed up to 8000+ MT/s

• 1DPC 2R Max speed up to 6400+ MT/s

• 2DPC 1R Max speed up to 6400+ MT/s

• 2DPC 2R Max speed up to 4800+ MT/s

Supports AMD POR Speed and JEDEC Speed

Supports Memory Overclocking and AMD EXPOTM

Supports Dual-Channel mode

Supports Non-ECC, Un-buffered memory

Supports CUDIMM, Clock Driver bypass mode only*

* CUDIMM support and POR boot frequency may vary by CPU series, with manual overclocking available after boot. Certain CPUs may fail to boot, but future BIOS updates will improve compatibility.

• Memory compatibility and supported speeds can vary depending on the CPU and memory configuration. For detailed information, please refer to the Memory Compatibility List available on the product’s Support page or visit https://www.msi.com/support/.

Onboard Graphics

1x HDMI™

Support HDMI™ 2.1, maximum resolution of 4K 60Hz*

*Available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed.

Expansion Slots

5x PCI-E x16 slot

PCI_E1 Gen PCIe 4.0 supports up to x16 (From CPU)

PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset)

PCI_E3 Gen PCIe 3.0 supports up to x1 (From Chipset)

PCI_E4 Gen PCIe 3.0 supports up to x4 (From Chipset)

PCI_E5 Gen PCIe 3.0 supports up to x1 (From Chipset)

PCI_E1 slot

• Supports PCIe 4.0 x16 (For Ryzen™ 9000/ 7000 Series processors)

• Supports PCIe 4.0 x8 (For Ryzen™ 8700/ 8600/ 8400 Series processors)

• Supports PCIe 4.0 x4 (For Ryzen™ 8500/ 8300 Series processor)

Audio

Realtek® ALC897

7.1-Channel High Definition Audio

Storage

2x M.2

M.2_1 Source (From CPU) supports up to PCIe 4.0 x4 , supports 2280/2260 devices

M.2_2 Source (From CPU) supports up to PCIe 4.0 x4 , supports 22110/2280/2260 devices

4x SATA 6G

M2_2 slot

• Supports up to PCIe 4.0 x4 (For Ryzen™ 9000/ 7000 Series processors)

• Supports up to PCIe 3.0 x4 (For Ryzen™ 8700/ 8600/ 8400 Series processors)

• Supports up to PCIe 3.0 x2 (For Ryzen™ 8500/ 8300 Series processor)

*Please refer to the manual for M.2 SSD heatsink restrictions.

RAID

Supports RAID 0 and RAID 1 for M.2 NVMe storage devices

USB

4x USB 2.0 (Rear)

4x USB 2.0 (Front)

2x USB 5Gbps Type A (Rear)

2x USB 5Gbps Type A (Front)

1x USB 5Gbps Type C (Front)

1x USB 10Gbps Type A (Rear)

1x USB 10Gbps Type C (Rear)

LAN

Realtek® 8125BG 2.5G LAN

WIRELESS / BLUETOOTH

Wi-Fi 7 Solution

The Wireless module is pre-installed in the M.2 (Key-E) slot

Supports MU-MIMO TX/RX, 2.4GHz/ 5GHz/ 6GHz* (320MHz) up to 5.8Gbps

Supports 802.11 a/ b/ g/ n/ ac/ ax/ be

Supports Bluetooth® 5.4**, MLO, 4KQAM

* 6GHz band support may depend on every country’s regulations and Wi-Fi 7 will be ready in Windows 11 version 24H2.

** The Bluetooth version may be updated, please refer to the Wi-Fi chipset vendor’s website for details. Bluetooth 5.4 will be ready in Windows 11 version 24H2.

Internal Connectors

1x Power Connector(ATX_PWR)

1x Power Connector(CPU_PWR)

1x CPU Fan

1x Combo Fan (Pump_Sys Fan)

4x System Fan

1x EZ Conn-header (JAF_1)

2x Front Panel (JFP)

1x Chassis Intrusion (JCI)

1x Front Audio (JAUD)

1x Com Port (JCOM)

1x Tuning Controller connector(JDASH)

2x Addressable V2 RGB LED connector (JARGB_V2)

1x RGB LED connector(JRGB)

1x TPM pin header(Support TPM 2.0)

4x USB 2.0 ports

2x USB 5Gbps Type A ports

1x USB 5Gbps Type C ports

Back Panel Ports

Clear CMOS Button

USB 10Gbps (Type-A)

USB 2.0

2.5G LAN

Wi-Fi / Bluetooth

Audio connectors

Flash BIOS Button

HDMI™ 2.1 Port

USB 10Gbps (Type-C)

USB 5Gbps (Type-A)

LED FEATURE

4x EZ Debug LED

Dimensions

ATX

243.84mmx304.8mm

Operating System

Support for Windows® 11 64-bit

Warranty

3 Years