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MSI Pro B840-S EVO WIFI6E AM5 ATX Motherboard
Available for delivery from Tuesday 30th June
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Next-Generation AM5 & DDR5 Performance
Built for the latest AMD Ryzen processors, this motherboard supports the AM5 socket platform and high-speed DDR5 memory, delivering faster data processing, improved multitasking, and enhanced overall system responsiveness. It provides a strong foundation for both productivity-focused builds and modern gaming PCs.
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Integrated WiFi 6E & Advanced Connectivity
Featuring built-in WiFi 6E, the B840-S EVO offers faster wireless speeds, lower latency, and improved performance in busy network environments. Combined with high-speed Ethernet and multiple USB ports, it ensures reliable connectivity for streaming, gaming, and professional workloads.
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Stable Power Delivery & Reliable Thermal Design
Designed as part of MSI’s PRO series, this board focuses on long-term stability and durability. Its optimised VRM power solution and effective heatsink design help maintain consistent performance under sustained workloads, making it ideal for users who value reliability and system longevity.
CPU
- Installed Processors (Max): 0 (1)
- Supported Processors: Supports AMD Ryzen 9000/ 8000/ 7000 Series Desktop Processors
- Socket: Socket AM5
Rear Panel I/O Ports
- HDMI Port: 1 x HDMI
- Support HDMIT 2.1, maximum resolution of 4K 60Hz*
- *Available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed.
Internal I/O Connectors
- SATA Connectors: 4x SATA 6G
- USB Connectors: 4 x USB 2.0 (Rear)
- 4 x USB 2.0 (Front)
- 2 x USB 5Gbps Type-A (Rear)
- 2 x USB 5Gbps Type-A (Front)
- 1 x USB 5Gbps Type-C (Front)
- 1 x USB 10Gbps Type-A (Rear)
- 1 x USB 10Gbps Type-C (Rear)
Memory
- Memory Bus Speed: 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 5600+ MT/s
- Memory Type: 4x DDR5 UDIMM, Maximum Memory Capacity 256GB
- Supports AMD POR Speed and JEDEC Speed
- Supports Memory Overclocking and AMD EXPOT
- Supports Dual-Channel mode
- Supports Non-ECC, Un-buffered memory
- Supports CUDIMM, Clock Driver bypass mode only
Electrical
- Power Requirements: ATX
Physical
- Colour: Black
Motherboard
- Northbridge: AMD B840
- RAID Supported: Supports RAID 0, RAID 1, and RAID 10 for SATA storage devices
- Supports RAID 0 and RAID 1 for M.2 NVMe storage devices
Internal I/O Connectors
- Cooling Fan Support: 1x CPU Fan
- 1x Combo Fan (Pump_Sys Fan)
- 4x System Fan
- Power Connector Port: 1x Power Connector(ATX_PWR)
- 1x Power Connector(CPU_PWR)
- Other Connectors: Internal:
- 2x Front Panel (JFP)
- 1x Chassis Intrusion (JCI)
- 1x Front Audio (JAUD)
- 1x Com Port (JCOM)
- 1x Tuning Controller connector (JDASH)
- 3x Addressable V2 RGB LED connector (JARGB_V2)
- 1x RGB LED connector (JRGB)
- 1x TPM pin header (Support TPM 2.0)
- Back Panel:
- Clear CMOS Button
- USB 10Gbps Type-A
- USB 2.0
- 2.5G LAN
- Wi-Fi / Bluetooth
- Audio connectors
- Flash BIOS Button
- HDMI
- USB 10Gbps Type-C
- USB 5Gbps Type-A
Expansion
- Number of PCI Express Slots: 2x
- PCI Express Slot Type: 2x 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 x4 (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 processors)
Memory
- Maximum RAM: 256 GB
Storage
- Embedded Storage Capacity: 3x 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
- M.2_3 Source (From Chipset) supports up to PCIe 3.0 x4, supports 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 8000 Series processors)
- Supports up to PCIe 3.0 x2 (For Ryzen 8500/8300 Series processors)
- *Please refer to the manual for M.2 SSD heatsink restrictions.
Graphics Device
- Integrated Graphics Supported: 1x HDMI
- Support HDMITM 2.1, maximum resolution of 4K 60Hz*
- *Available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed.
Sound
- Integrated Sound: Realtek ALC897
- 7.1-Channel High Definition Audio
Network
- Integrated Network: LAN:
- Realtek 8125D 2.5G LAN
- WIRELESS LAN & BLUETOOTH:
- Wi-Fi 6E
- The Wireless module is pre-installed in the M.2 (Key-E) slot
- Supports MU-MIMO TX/RX, 2.4GHz/5GHz/6GHz* (160MHz) up to 2.4Gbps
- Supports 802.11 a/b/g/n/ac/ax
- Supports Bluetooth 5.3**, FIPS, FISMA
- * Wi-Fi 6E 6GHz may depend on every country's regulations and will be ready in Windows 10 build 21H1 and Windows 11.
- ** The Bluetooth version may be updated, please refer to the Wi-Fi chipset vendor's website for details.
- Bluetooth Version: 5.3
System Requirements
- Operating Systems Supported: Windows 11 64-bit
System
- Special Features: LED:
- 4x EZ Debug LED
- 1x EZ Memory Detection LED
Physical
- Form Factor: ATX
- Width: 243.84 mm
- Length: 304.8 mm
Identifiers
- Stock Code: MBD3999
- Mfg Code: PRO B840-S EVO WIFI6E
Get 5% off selected components when you buy 3 or more
*For a limited time, purchase three qualifying components from different categories and get 5% off at checkout.
To see qualifying products, visit our promotion here.
Terms & Conditions apply.
Promotional Period: From Wednesday 24th June, whilst stocks last.
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