





ASUS PRIME B860M-A WIFI LGA1851 - 90MB1JY0-M0EAY0 Motherboard
- CPU socket
- LGA 1851
- Chipset (MB)
- Intel B860 MB
- Form factor
- Micro ATX
- Supported memory
- DDR5
- Number of memory slots
- 4
Description
ASUS PRIME B860M-A WIFI is a Micro ATX motherboard with an LGA 1851 socket and Intel B860 chipset, aimed at a stable mid-range build with current Intel Core Ultra processors. It combines modern features like PCIe 5.0, DDR5 memory, and built-in WiFi 6E in a more compact format that fits comfortably in most mid-tower cases. You get 4 RAM slots supporting up to 256 GB DDR5 and very high frequencies when overclocked, plus fast M.2 slots for NVMe SSDs. This board is a balanced foundation for a modern gaming and productivity system without unnecessary embellishments.
What you get
With an LGA 1851 socket and support for Intel Core Ultra processors, you have a direct path to the current generation of Intel CPUs. The four DDR5 slots allow for up to 256 GB RAM, which is more than enough for heavy multitasking, working with large projects, and future upgrades, while the ability to reach frequencies of up to 8666+ MT/s (OC) provides serious potential for enthusiast settings. With 2 M.2 slots – one with PCIe 5.0 x4 and the other with PCIe 4.0 x4 – you can combine a super-fast system drive and a second SSD for games or work files. The built-in WiFi 6E and 2.5Gb Ethernet give you the choice between a stable wired connection and fast wireless internet, without needing additional cards. Add RAID support over 4 x SATA3 ports and you can create a fast and fail-safe storage configuration.
- LGA 1851 socket with Intel B860 chipset – supports Intel Core Ultra processors and provides a modern platform for a new build or upgrade.
- 4 DDR5 slots up to 256 GB and up to 8666+ MT/s (OC) – gives you enough capacity and frequency for heavy applications, multitasking, and long-term upgrades.
- 2 x M.2 slots (PCIe 5.0 x4 + PCIe 4.0 x4) – allows you to combine an ultra-fast NVMe system drive and a second SSD for games or work without bottlenecks in storage.
- 1 x PCIe 5.0 x16, 1 x PCIe 4.0 x16 (x4) and 1 x PCIe 4.0 x1 – enough expansion slots for GPU and additional cards according to your needs.
- WiFi 6E (802.11ax) and Bluetooth 5.3 – built-in fast wireless connectivity for internet and peripherals without the need for separate adapters.
- Realtek 2.5Gb Ethernet – higher bandwidth than standard gigabit LAN for local network and online gaming.
- Realtek High Definition Audio up to 7.1-channel – decent built-in audio for gaming, movies, and voice chat without needing an external sound card.
- 4 x SATA3 with RAID 0/1/5/10 – flexibility for classic HDD/SSD arrays combining speed and redundancy for data security.
Who it is suitable for
This motherboard is suitable for mid-range to more serious gaming and productivity configurations where you want a current Intel Core Ultra processor, PCIe 5.0 GPU slot, and DDR5, without chasing extreme enthusiast class. It is a good choice for compact Micro ATX builds with plenty of RAM, fast NVMe drives, and a need for WiFi 6E and 2.5Gb LAN. If you are looking for extreme overclocking or the maximum number of PCIe slots for specialized cards, there may be more suitable high-end platforms.
The strongest aspect of ASUS PRIME B860M-A WIFI is the combination of a modern Intel platform, PCIe 5.0, DDR5, dual M.2, and built-in fast networking in a compact Micro ATX format. You get a stable and future-oriented foundation for a current build without unnecessary compromises.
Full specifications
- Manufacturer
-
ASUS
- Product Code
- 90MB1JY0-M0EAY0
- CPU socket
-
LGA 1851
- Chipset (MB)
- Intel B860
- Form factor
- Micro ATX
- Supported processors
-
Intel 1851; LGA1851 socket: Support for Intel Core Ultra Processors
- Supported memory
-
DDR5
- Number of memory slots
- 4
- Maximum RAM capacity
- 256 GB
- Memory frequency (MHz)
-
up to 8666+MT/s (OC)
- Support for dual-channel memory
- Yes
- Built-in Wi-Fi
-
WiFi 6E (802.11ax); Wi-Fi 6E
- Bluetooth version
- Bluetooth V5.3
- Built-in LAN
-
1 x Realtek 2.5Gb Ethernet
- SATA interface
- 4 x SATA3 6.0 Gb/s
- RAID support
- 0, 1, 5, 10
- Expansion slots
-
Intel® Core™ Ultra Processors(series 2)1 x PCIe 5.0 x16 slotIntel® B860 Chipset1 x PCIe 4.0 x16 slot (supports x4 mode)1 x PCIe 4.0 x1 slot; PCIe 5.0 x16 slot, PCIe 4.0 x16 slot, PCIe 4.0 x1 slot
- Power connector
-
1 x 24-pin1 x 8-pin24-pin Main Power connector, 8-pin +12V CPU Power connector
- Rear I/O panel
-
USB 20Gbps, USB 10Gbps, 2 USB 5Gbps, 4 USB 2.0, 2 DisplayPort, HDMI, Realtek 2.5Gb Ethernet port, 3 Audio jacks
- BIOS
- 256 (128+128) Mb Flash ROM, UEFI AMI BIOS;
- Processor generation
-
2nd generation Intel Ultra
- Warranty
- 36 months
- Supported technologies
- ASUS Exclusive Software
- OS
-
Windows 11 (22H2 & later), Windows 10 64-bit(21H2 & later)Windows 11 64-bit
- Built-in audio
-
Realtek® Audio CODECHigh Definition Audio2/4/5.1/7.1-channelRealtek 7.1 Surround Sound High Definition Audio CODEC
- M2 slot
-
Total supports 2 x M.2 slotsIntel® Core™ Ultra Processors (Series 2)M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)Intel®B860 ChipsetM.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 modes)2 M.2 slots (Key M)
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