MSI B850 GAMING PLUS WIFI ATX Motherboard

Chipset

AMD B850

CPU Support

Supports AMD Ryzen™ 9000/8000/7000 Series Desktop Processors
Socket: AM5

Memory

- Slots: 4x DDR5 UDIMM
- Maximum Capacity: 256GB
- Supported Speeds: DDR5 8200–5600 (OC) MT/s / 5600–4800 (JEDEC) MT/s
- Ryzen™ 9000 Series Overclocking:
  • 1DPC 1R: up to 8200+ MT/s
  • 1DPC 2R: up to 6400+ MT/s
  • 2DPC 1R: up to 6400+ MT/s
  • 2DPC 2R: up to 4800+ MT/s
- Supports AMD POR Speed, JEDEC Speed, Memory Overclocking and AMD EXPOTM
- Supports Dual‑Channel mode, Non‑ECC, Un‑buffered memory, and CUDIMM (Clock Driver bypass mode only*)
- Note: CUDIMM support and POR boot frequency may vary by CPU series (manual overclocking may be needed, and future BIOS updates may improve compatibility).
- Memory compatibility and supported speeds can vary with CPU/memory configuration—please refer to the Memory Compatibility List on MSI Support for details.

Onboard Graphics

1x DisplayPort supporting DisplayPort 1.2, up to 4K 60Hz*
*Available only on processors with integrated graphics; specifications may vary with the CPU installed.

Expansion Slots

4x PCI-E x16 Slots:
- PCI_E1: From CPU, Gen PCIe 5.0 up to x16
   • For Ryzen™ 9000/7000 Series: PCIe 5.0 x16
   • For Ryzen™ 8700/8600/8400 Series: PCIe 4.0 x8
   • For Ryzen™ 8500/8300 Series: PCIe 4.0 x4
- PCI_E2: From Chipset, Gen PCIe 3.0 up to x1
- PCI_E3: From Chipset, Gen PCIe 4.0 up to x4
- PCI_E4: From Chipset, Gen PCIe 3.0 up to x1
Note: PCI_E2, PCI_E3, and PCI_E4 share bandwidth; the PCI_E3 slot will run at x2 speed when devices are installed in PCI_E2 or PCI_E4 slots.

Audio

Realtek® ALC897 Codec with 7.1‑Channel High Definition Audio

Storage

M.2 Slots: 3x plus 4x SATA 6G ports

• M.2_1 (CPU): Supports up to PCIe 5.0 x4; supports 2280/2260 devices
   – For Ryzen™ 9000/7000 Series: PCIe 5.0 x4
   – For Ryzen™ 8000 Series: PCIe 4.0 x4

• M.2_2 (CPU): Supports up to PCIe 4.0 x4; supports 22110/2280 devices

• M.2_3 (Chipset): Supports up to PCIe 4.0 x2; supports 2280/2260 devices

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 Ports

Rear:
- 4x USB 2.0
- 1x USB 5Gbps Type A
- 2x USB 10Gbps Type C

Front:
- 4x USB 2.0
- 4x USB 5Gbps Type A
- 1x USB 5Gbps Type C
- Additionally, 1x USB 10Gbps Type A is provided on the rear panel alongside the Type C ports.

LAN

Realtek® 8126VB 5G LAN

Internal I/O Connectors

- 1x Power Connector (ATX_PWR)
- 2x Power Connectors (CPU_PWR)
- 1x Power Connector (PCIE_PWR 8pin)
- 1x CPU Fan header
- 1x Combo Fan (Pump_Sys Fan) header
- 4x System Fan headers
- 1x EZ Conn‑header (JAF_1)
- 2x Front Panel headers (JFP)
- 1x Chassis Intrusion header (JCI)
- 1x Front Audio header (JAUD)
- 1x Com Port header (JCOM)
- 1x Tuning Controller connector (JDASH)
- 3x Addressable V2 RGB LED connectors (JARGB_V2)
- 1x RGB LED connector (JRGB)
- 1x TPM header (supports TPM 2.0)
- Additional internal USB headers: 4x USB 2.0, 4x USB 5Gbps Type A, and 1x USB 5Gbps Type C

Wireless LAN & Bluetooth

Wi‑Fi 7 Solution: Module 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
Bluetooth: Bluetooth® 5.4 with MLO and 4KQAM
6GHz band support may depend on local regulations; Wi‑Fi 7 and Bluetooth 5.4 will be ready in Windows® 11 version 24H2 (Bluetooth version subject to update).

LED Feature

4x EZ Debug LEDs

Back Panel Ports

- Clear CMOS Button
- Flash BIOS Button
- DisplayPort
- Audio Connectors
- S/PDIF‑OUT
- USB 10Gbps (Type‑A)
- Two USB 10Gbps (Type‑C) ports
- USB 5Gbps (Type‑A)
- USB 2.0
- 5G LAN
- Wi‑Fi/Bluetooth

Operating System

Supports Windows® 11 (64‑bit)

PCB / Form Factor

ATX; Dimensions: 243.84mm x 304.8mm