MSI Pro B850-S Wi-Fi6E

Manufacturer: MSI

The MSI Pro B850-S Wi-Fi6E is an ATX form factor motherboard designed around AMD's AM5 platform, pairing the B850 chipset with a broad feature set suited to a range of desktop builds. It includes built-in Wi-Fi 6E and Bluetooth 5.3, removing the need for separate wireless adapters, and ships with RGB lighting alongside a clear CMOS button for straightforward BIOS resets. A three-year warranty backs the board, and the standard 304.8 × 243.8 mm footprint fits most full-size cases without issue.

On the memory side, the board accommodates four DDR5 slots across two channels, reaching a rated ceiling of 5600 MHz or up to 8200 MHz with overclocking, with a maximum capacity of 256 GB. Storage connectivity includes four SATA 3 connectors, two M.2 sockets, and RAID 0, 1, and 10 support. The rear panel provides three USB 3.2 Gen 2 Type-A ports, four USB 3.2 Gen 1 Type-A ports, one USB 3.2 Gen 2 Type-C port, HDMI 2.1, one DisplayPort output, and a single RJ45 jack. Expansion options consist of one PCIe 4.0 x16 slot, one PCIe x4 slot, and one PCIe x1 slot, while onboard headers add four USB 2.0 and two USB 3.0 expansion ports along with six fan headers and a TPM connector.

Pros

Supports Wi-Fi 6E and Bluetooth 5.3, removing the need for separate wireless adapters
Four DDR5 memory slots with support for up to 256GB and overclocked speeds reaching 8200 MHz provides substantial headroom for memory-intensive workloads
Eight rear USB ports across multiple generations, including a USB 3.2 Gen 2 Type-C, offer broad peripheral compatibility
HDMI 2.1 and DisplayPort outputs provide two independent display connections directly from the board
Six fan headers give good flexibility for managing airflow across larger cooling setups
Three-year warranty offers solid long-term coverage for a platform investment

Cons

No PCIe 5.0 x16 slot, limiting compatibility with the fastest current-generation expansion cards
Only two M.2 sockets, which may feel restrictive for builds relying heavily on NVMe storage
No S/PDIF Out port, ruling out direct digital audio connections to compatible receivers or DACs
ECC memory is not supported, making the board unsuitable for workloads that require error-correcting RAM
Dual BIOS is absent, so there is no automatic fallback if a firmware update fails

Who is this for?

This board is well suited to users building a capable AMD AM5 desktop system who want integrated wireless connectivity without adding expansion cards, thanks to its built-in Wi-Fi 6E and Bluetooth 5.3. The four DDR5 slots with a 256GB ceiling and overclocked RAM support up to 8200 MHz make it a reasonable fit for content creators and enthusiasts who benefit from high-capacity, fast memory configurations. The combination of multiple rear USB ports, HDMI 2.1, DisplayPort, and six fan headers also makes it practical for multi-display workstation builds that require flexible cooling and peripheral management.

Who is this NOT for?

Users who need the fastest available PCIe bandwidth for cutting-edge graphics cards or high-speed storage will find this board limiting, as it lacks a PCIe 5.0 x16 slot. Those planning NVMe-heavy storage arrays may also feel constrained by the presence of only two M.2 sockets. Additionally, the absence of ECC memory support makes this board a poor fit for professional workloads requiring error-correcting RAM, such as data processing, scientific computing, or server-adjacent tasks where memory integrity is critical.

General info:

CPU socket	AM5
chipset	B850
form factor	ATX
supports Wi-Fi	✓
Wi-Fi version	Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 6E (802.11ax)
Has Bluetooth	✓
Bluetooth version	5.3
HDMI version	HDMI 2.1
Easy to overclock	✓
has RGB lighting	✓
Easy to reset BIOS	✓
Has dual BIOS	✕
has aptX	✕
CPU sockets	1
Has integrated graphics	✕
warranty period	3 years
height	243.8 mm
width	304.8 mm
Has integrated CPU	✕

The MSI Pro B850-S Wi-Fi6E is built around the AM5 socket with B850 chipset compatibility and follows the standard ATX form factor, measuring 304.8 × 243.8 mm. It supports Wi-Fi across multiple generations — 802.11n, 802.11ac, and 802.11ax including Wi-Fi 6E — alongside Bluetooth 5.3, though aptX is not supported. Video output is handled through an HDMI 2.1 port, while the board does not include integrated graphics or an integrated CPU. Overclocking is straightforward by design, and RGB lighting is present on the board itself. Resetting the BIOS is made easy via a clear CMOS feature, though there is no dual BIOS. The board carries a three-year warranty and fits a single CPU socket configuration.

Memory:

maximum memory amount	256GB
RAM speed (max)	5600 MHz
overclocked RAM speed	8200 MHz
memory slots	4
DDR memory version	5
memory channels	2
Supports ECC memory	✕

The board supports DDR5 memory across four slots in a dual-channel configuration, with a maximum capacity of 256GB. Stock RAM speeds reach up to 5600 MHz, while overclocking can push that figure to 8200 MHz. ECC memory is not supported.

Ports:

USB 3.2 Gen 2 ports (USB-A)	3
USB 3.2 Gen 1 ports (USB-A)	4
USB 3.2 Gen 2 ports (USB-C)	1
USB 3.2 Gen 1 ports (USB-C)	0
USB 2.0 ports	0
USB 3.2 Gen 2x2 ports	0
USB 4 40Gbps ports	0
USB 4 20Gbps ports	0
Thunderbolt 4 ports	0
Thunderbolt 3 ports	0
has an HDMI output	✓
DisplayPort outputs	1
RJ45 ports	1
Has USB Type-C	✓
eSATA ports	0
DVI outputs	0
has a VGA connector	✕
PS/2 ports	0

The rear panel offers a solid spread of USB connectivity, with three USB 3.2 Gen 2 Type-A ports, four USB 3.2 Gen 1 Type-A ports, and one USB 3.2 Gen 2 Type-C port. There are no USB 2.0, USB 3.2 Gen 1 Type-C, Gen 2x2, USB 4, Thunderbolt 3, or Thunderbolt 4 ports present. Display output is covered by one HDMI port and one DisplayPort output, while VGA and DVI connectors are absent. Networking is handled by a single RJ45 port, and there are no eSATA or PS/2 ports included.

Connectors:

USB 3.2 Gen 1 ports (through expansion)	2
USB 3.2 Gen 2 ports (through expansion)	0
USB 3.2 Gen 2x2 ports (through expansion)	0
USB-C 3.2 Gen 2 ports (through expansion)	1
USB 2.0 ports (through expansion)	4
SATA 3 connectors	4
fan headers	6
USB 3.0 ports (through expansion)	2
M.2 sockets	2
Has TPM connector	✓
U.2 sockets	0
Has mSATA connector	✕
SATA 2 connectors	0

For internal expansion, the board provides two USB 3.2 Gen 1 headers, one USB-C 3.2 Gen 2 header, and four USB 2.0 headers, while USB 3.2 Gen 2 and Gen 2x2 expansion connectors are not included. Storage connectivity consists of four SATA 3 connectors and two M.2 sockets, with no SATA 2, U.2, or mSATA options present. Cooling is well served by six fan headers, and a TPM connector is also onboard for security module support.

Expansion slots:

PCIe 4.0 x16 slots	1
PCIe 5.0 x16 slots	0
PCIe 3.0 x16 slots	0
PCIe x1 slots	1
PCI slots	0
PCIe 2.0 x16 slots	0
PCIe x4 slots	1
PCIe x8 slots	0

The board includes three expansion slots in total: one PCIe 4.0 x16 slot, one PCIe x4 slot, and one PCIe x1 slot. There are no PCIe 5.0, PCIe 3.0, PCIe 2.0, or PCIe x8 slots, and no legacy PCI slots are present.

Audio:

audio channels	7.1
Has S/PDIF Out port	✕
audio connectors	3

The board supports 7.1-channel audio and provides three analog audio connectors on the rear panel. An S/PDIF Out port is not included.

Storage:

Supports RAID 1	✓
Supports RAID 10 (1+0)	✓
Supports RAID 5	✕
Supports RAID 0	✓
Supports RAID 0+1	✕

The board supports RAID 0, RAID 1, and RAID 10 configurations, covering the most common setups for both performance and redundancy. RAID 5 and RAID 0+1 are not supported.

Final Verdict

The MSI Pro B850-S Wi-Fi6E is a well-rounded ATX motherboard for the AM5 platform that covers the essentials without overreaching. Its built-in Wi-Fi 6E, Bluetooth 5.3, and DDR5 support with overclocking headroom up to 8200 MHz make it a practical foundation for enthusiast and workstation builds that prioritize connectivity and memory flexibility. The absence of PCIe 5.0 and limited M.2 slots do place a ceiling on its scalability for the most demanding configurations, but for users not chasing the absolute bleeding edge in storage or GPU bandwidth, those trade-offs are unlikely to be felt day-to-day. Backed by a three-year warranty and offering a clean set of rear ports and cooling headers, this board delivers a coherent and functional package for mainstream AMD desktop builds.