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LGA1851 · Z890 · ATX
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$450Nov 93 videos
MSI PRO B860M-A WiFi
Micro-ATX B860 board with Wi-Fi 7, 5GbE and a Thunderbolt 4 port at an entry price tier.
- LGA1851
- B860
- Micro-ATX
- DDR5
- 3
PCPR score
7.4
Good
Best price we’ve seen
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R1
The short version
The PRO B860M-A WiFi is MSI's value Micro-ATX B860 board, with four DDR5 slots, three M.2 slots (one PCIe 5.0), Wi-Fi 7, 5GbE and a rear Thunderbolt 4 port. One M.2 slot runs at only PCIe 4.0 x2. It suits compact non-overclocked Core Ultra builds; it has no BIOS flash button on the rear panel.
Pros
- Thunderbolt 4 port on a Micro-ATX B860 board
- Wi-Fi 7 and 5GbE
- Four DDR5 slots up to 256GB
- Dual 8-pin CPU power
Cons
- No rear BIOS flash button listed
- Third M.2 slot runs at only PCIe 4.0 x2
- Only one PCIe 5.0 M.2 slot
Best for
- Compact Core Ultra builds on a budget
- Office and mainstream gaming PCs
J3
Full specifications
Core
- Socket
- LGA1851
- Chipset
- B860
- Form factor
- Micro-ATX
Memory
- Memory type
- DDR5
- Memory slots type
- DIMM
- Memory slots
- 4
- Max memory
- 256 GB
- Max memory speed (OC)
- 8,800 MT/s
Expansion
- M.2 slots
- 3
- M.2 PCIe 5.0 slots
- 1
- M.2 PCIe 4.0 slots
- 2
- M.2 PCIe 3.0 slots
- 0
- Supports M.2 22110
- No
- SATA ports
- 4
- PCIe x16 slots
- 1
- Primary PCIe slot version
- 5.0
- PCIe x4 slots
- 1
- PCIe x1 slots
- 2
Connectivity
- Wi-Fi
- Wi-Fi 7
- Bluetooth
- 5.4
- Ethernet speed
- 5 GbE
- Ethernet ports
- 1
Ports & I/O
- USB4 / Thunderbolt ports
- 1
- Rear USB-C ports
- 2
- Rear USB-A ports
- 5
- Front USB-C header
- Yes
- USB 3 headers
- 2
- USB 2 headers
- 2
- HDMI outputs (iGPU)
- 1
- DisplayPort outputs (iGPU)
- 1
Cooling
- Fan headers
- 5
- ARGB headers (5V)
- 2
- RGB headers (12V)
- 1
Power
- CPU power
- 2x 8-pin
Fit
- Back-connect (BTF / Project Zero)
- No
Features
- BIOS flashback
- No
Physical
- Color
- Black
Compatibility notes
- The PCI_E4 x4 slot shares lanes; check the manual for sharing limits.
- M.2_3 supports 2280 devices only.
P1
Where to buy
- Buy from the maker
MSI official page
Direct link
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AV1
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R9
Common questions
Is the PRO B860M-A WiFi Wi-Fi 7?
Yes, an Intel Wi-Fi 7 module with Bluetooth 5.4 is pre-installed in the M.2 Key-E slot.
Does it have Thunderbolt?
Yes, one Thunderbolt 4 Type-C port on the rear I/O, and a header for a Thunderbolt 5 add-in card.
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