MSI Pro B860-P

Manufacturer: MSI

The MSI Pro B860-P is an ATX form factor motherboard designed for Intel's LGA 1851 platform, pairing with the B860 chipset to offer a solid foundation for mainstream desktop builds. It ships with dual BIOS for added resilience during firmware updates, along with an easy CMOS reset mechanism and support for straightforward overclocking. RGB lighting is built in, and the board measures 304.8 mm × 243.8 mm, fitting standard ATX enclosures without issue. A two-year warranty backs the product.

On the memory side, the board carries four DDR5 slots across two channels, handling up to 256 GB at a rated speed of 6400 MHz or up to 8600 MHz with overclocking. Storage connectivity includes three M.2 sockets, four SATA 3 ports, and full support for RAID 0, 1, 5, and 10. The rear I/O provides a Thunderbolt 4 port, a USB 4 40 Gbps port, two USB 3.2 Gen 2 Type-A ports, two USB 3.2 Gen 1 Type-A ports, four USB 2.0 ports, HDMI 2.1, one DisplayPort output, and a single RJ45 jack. Expansion slots include one PCIe 5.0 x16, one PCIe 4.0 x16, and one PCIe x1 slot. Audio runs through a 7.1-channel codec with three rear connectors, while six fan headers allow for flexible thermal management. Wi-Fi and Bluetooth are not included.

Pros

Dual BIOS provides a fallback option if a firmware update goes wrong, reducing the risk of a bricked board
Four DDR5 slots with support for up to 256 GB of RAM offers substantial headroom for memory-intensive workloads
Thunderbolt 4 and USB 4 40Gbps ports on the rear I/O enable very fast data transfer with compatible devices
Three M.2 sockets alongside four SATA 3 connectors give plenty of flexibility for combining fast NVMe drives with traditional storage
Full RAID 0, 1, 5, and 10 support allows for meaningful data redundancy or performance configurations without additional hardware
Six fan headers provide considerable flexibility when building out a multi-fan cooling setup

Cons

No built-in Wi-Fi or Bluetooth means wireless connectivity requires a separate adapter
ECC memory is not supported, limiting suitability for workloads that depend on error-correcting RAM
No rear USB-C ports beyond the Thunderbolt 4 connection, which may be restrictive for users with multiple USB-C peripherals
No S/PDIF Out port limits digital audio output options for users who rely on optical or coaxial connections
Only three analog audio connectors on the rear panel, which may be limiting for complex multi-speaker setups

Who is this for?

This board is a solid fit for users building a capable desktop system around Intel's LGA 1851 platform who want room to grow. The combination of three M.2 sockets, four SATA 3 connectors, and full RAID 0/1/5/10 support makes it well-suited for those who need flexible, redundant, or high-capacity storage setups. The dual BIOS, easy CMOS reset, and overclocking support appeal to enthusiasts who want stability alongside tuning headroom, while the Thunderbolt 4 and USB 4 40Gbps connectivity serves users who regularly work with fast external drives or professional peripherals. The six fan headers and ATX form factor also make it a practical choice for anyone planning a well-cooled, fully expandable mid-tower build.

Who is this NOT for?

Users who rely on wireless connectivity out of the box will find this board lacking, as it includes neither Wi-Fi nor Bluetooth, requiring a separate adapter for any wireless use. It is equally unsuitable for those who need ECC memory support, such as workstation or server environments where data integrity under continuous load is a priority. The absence of rear USB-C ports beyond the Thunderbolt 4 connection may also frustrate users with several modern USB-C peripherals, and the lack of an S/PDIF Out port makes it a poor match for anyone who depends on digital optical or coaxial audio output in their setup.

General info:

CPU socket	LGA 1851
chipset	B860
form factor	ATX
supports Wi-Fi	✕
Has Bluetooth	✕
HDMI version	HDMI 2.1
Easy to overclock	✓
has RGB lighting	✓
Easy to reset BIOS	✓
Has dual BIOS	✓
CPU sockets	1
Has integrated graphics	✕
warranty period	2 years
height	243.8 mm
width	304.8 mm
Has integrated CPU	✕

The MSI Pro B860-P uses an LGA 1851 socket paired with the B860 chipset and follows the standard ATX form factor, measuring 304.8 mm × 243.8 mm. It features a single CPU socket and does not include an integrated CPU or integrated graphics support. The board supports easy overclocking and comes equipped with dual BIOS alongside a straightforward CMOS reset mechanism, adding a layer of reliability to firmware management. RGB lighting is present, and the board outputs video through HDMI 2.1. Wi-Fi and Bluetooth are not built in, so wireless connectivity requires additional hardware. A two-year warranty is included with the product.

Memory:

maximum memory amount	256GB
RAM speed (max)	6400 MHz
overclocked RAM speed	8600 MHz
memory slots	4
DDR memory version	5
memory channels	2
Supports ECC memory	✕

The board accommodates DDR5 memory across 4 slots in a dual-channel configuration, supporting a maximum installed capacity of 256 GB. Out of the box, RAM runs at up to 6400 MHz, with overclocking headroom extending that figure to 8600 MHz. ECC memory is not supported.

Ports:

USB 3.2 Gen 2 ports (USB-A)	2
USB 3.2 Gen 1 ports (USB-A)	2
USB 3.2 Gen 2 ports (USB-C)	0
USB 3.2 Gen 1 ports (USB-C)	0
USB 2.0 ports	4
USB 3.2 Gen 2x2 ports	0
USB 4 40Gbps ports	1
USB 4 20Gbps ports	0
Thunderbolt 4 ports	1
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 I/O panel offers a well-rounded set of connectivity options, anchored by a Thunderbolt 4 port and a USB 4 40Gbps port for high-speed data transfer. USB Type-A coverage includes two USB 3.2 Gen 2 ports and two USB 3.2 Gen 1 ports, complemented by four USB 2.0 ports for legacy peripherals. There are no USB 3.2 Gen 2 or Gen 1 Type-C rear ports, no USB 3.2 Gen 2x2, no USB 4 20Gbps, and no Thunderbolt 3. Display output is handled through an HDMI output and one DisplayPort, with no DVI or VGA connectors present. A single RJ45 port provides wired network connectivity, while eSATA and PS/2 ports are absent.

Connectors:

USB 3.2 Gen 1 ports (through expansion)	4
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)	4
M.2 sockets	3
Has TPM connector	✓
U.2 sockets	0
Has mSATA connector	✕
SATA 2 connectors	0

Internal connectivity is handled through three M.2 sockets and four SATA 3 connectors, with no SATA 2 or U.2 sockets and no mSATA support. For USB expansion via headers, the board provides four USB 3.2 Gen 1 ports, four USB 3.0 ports, four USB 2.0 ports, and one USB-C 3.2 Gen 2 port. Thermal management is supported by six fan headers, offering flexibility in cooling configurations. A TPM connector is also present for security module attachment.

Expansion slots:

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

The board provides three expansion slots in total: one PCIe 5.0 x16 slot for the primary graphics card or other full-bandwidth add-in cards, one PCIe 4.0 x16 slot for additional expansion, and one PCIe x1 slot for smaller peripherals. There are no PCIe 3.0, 2.0, x4, or x8 slots, and no legacy PCI slots.

Audio:

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

The onboard audio supports a 7.1-channel configuration and is accessible through 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 four RAID modes: RAID 0, 1, 5, and 10, covering a range of performance and redundancy configurations. RAID 0+1 is not supported.

Final Verdict

The MSI Pro B860-P is a well-specified ATX motherboard that covers most of the essentials for a capable Intel LGA 1851 desktop build. Its Thunderbolt 4 connectivity, three M.2 sockets, and comprehensive RAID support give it genuine versatility for users who prioritize fast storage, high-bandwidth peripherals, and data redundancy. The dual BIOS and overclocking support add a layer of resilience and tuning flexibility that will appeal to enthusiast builders. That said, the absence of built-in wireless and ECC memory support narrows its appeal for those with specific connectivity or workstation requirements. Overall, the Pro B860-P is a practical and feature-complete choice for mainstream desktop builders who want a stable, expandable platform without unnecessary compromises in the areas that matter most.