The MSI B850 Gaming Plus Wi-Fi PZ uses the AM5 socket with a B850 chipset and follows the standard ATX form factor, measuring 304.8 mm wide and 243.8 mm tall. It accommodates a single CPU and has no integrated processor or integrated graphics. Wireless connectivity is well-covered, with Wi-Fi support spanning versions 4 through 7 (802.11n up to 802.11be) alongside Bluetooth 5.4, though aptX audio is not supported. The board includes RGB lighting, a clear CMOS button for easy BIOS resets, and is noted as straightforward to overclock, while dual BIOS is not available. A three-year warranty is included.
The board supports DDR5 memory across four slots arranged in a dual-channel configuration, with a maximum capacity of 256 GB. Native RAM speeds reach up to 5600 MHz, while overclocking can push that figure to 8200 MHz. ECC memory is not supported.
The rear I/O panel provides a total of eight USB ports: one USB 3.2 Gen 2 Type-A, one USB 3.2 Gen 1 Type-A, two USB 3.2 Gen 2 Type-C, and four USB 2.0 ports. There are no USB 3.2 Gen 2x2, USB 4, Thunderbolt 3, or Thunderbolt 4 ports, and no USB 3.2 Gen 1 Type-C port. For display output, a single DisplayPort is available, while HDMI, DVI, and VGA connectors are absent. Networking is handled by one RJ45 port, and there are no eSATA or PS/2 ports.
Internal connectivity includes three M.2 sockets and four SATA 3 connectors for storage, with no SATA 2, mSATA, or U.2 sockets present. For USB expansion, the board offers four USB 3.2 Gen 1 ports and four USB 2.0 ports through internal headers, while USB 3.2 Gen 2, Gen 2x2, and USB-C 3.2 Gen 2 expansion headers are not available. Cooling is supported by six fan headers, and a TPM connector is also included.
The board offers four expansion slots in total: one PCIe 5.0 x16 slot for the primary card, one PCIe x4 slot, and two PCIe x1 slots. There are no PCIe 2.0, 3.0, or 4.0 x16 slots, no PCIe x8 slot, and no legacy PCI slots.
The board supports 7.1-channel audio and includes two analog audio connectors on the rear panel. Digital audio output is also available through an S/PDIF Out port.
The board supports four RAID configurations: RAID 0, RAID 1, RAID 5, and RAID 10 (1+0). RAID 0+1 is not supported.