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ASRock B860M Challenger WiFi micro-ATX motherboard, dark PCB with silver heatsinks

ASRock

ASRock B860M Challenger WiFi Intel motherboard

SKU CH-MYBX-Q3KCR MPN B860M Challenger WiFi

Micro-ATX board for Intel Core Ultra Series 2 CPUs with DDR5 memory, PCIe 5.0 graphics slot, 2.5 GbE LAN and Wi-Fi

  • CPU Socket TypeLGA 1851
  • CPU TypeIntel Core Ultra Processors (Series 2) (LGA1851)
  • Supported CPU TechnologiesHybrid Technology Turbo Boost Max 3.0 Technology Thermal Vel
  • ChipsetIntel B860
  • Onboard Video ChipsetIntel Xe LPG Graphics Architecture
  • Number of Memory Slots4x288pin (DDR5)
  • Supports Intel Core Ultra Series 2 processors with LGA 1851 socket
  • 10+1+1+1+1 power phase design with Dr.MOS for stable delivery
  • Four DDR5 slots enable up to 256GB dual-channel memory
  • PCIe 5.0 x16 and PCIe 4.0 x16 slots for high-speed expansion
  • 5Gbps LAN and Realtek ALC897 7.1-channel audio for connectivity and sound

LGA 1851 Intel B860 Micro ATX motherboard

The ASRock B860M Challenger WiFi is built for Intel Core Ultra Series 2 processors on the LGA 1851 socket. It uses the Intel B860 chipset and provides onboard Intel Xe LPG graphics. The board supports up to 256 GB of DDR5 5600 memory across four 288 pin slots running in dual channel mode with Intel XMP 3.0 profiles. It is aimed at builders who want a compact platform for modern Intel CPUs.

Straightforward installation

The board follows the Micro ATX form factor so it fits most cases designed for that size. CPU power uses a 10+1+1+1+1 phase Dr.MOS design that connects with regular EPS cables. Four DDR5 slots are spaced normally and the single PCI Express 5.0 x16 slot sits in the top position. Common issues include forgetting to seat the 288 pin DDR5 modules fully until the latches click and overlooking the extra 4 pin CPU power connector needed for full phase operation.

Suits compact Core Ultra builds needing 2.5 Gbps

This motherboard fits users building a smaller system with an Intel Core Ultra Series 2 processor who need 2.5 Gbps wired networking and wireless connectivity. The four SATA 6Gb/s ports and three M.2 sockets cover typical storage needs. Builders requiring more than one full length PCIe 5.0 x16 slot or specialised server features such as ECC memory should look at larger chipset options instead.

Highlights

  • Supports Intel Core Ultra Series 2 processors with LGA 1851 socket
  • 10+1+1+1+1 power phase design with Dr.MOS for stable delivery
  • Four DDR5 slots enable up to 256GB dual-channel memory
  • PCIe 5.0 x16 and PCIe 4.0 x16 slots for high-speed expansion
  • 5Gbps LAN and Realtek ALC897 7.1-channel audio for connectivity and sound

Specifications

BrandASRock
SeriesChallenger
CPU Socket TypeLGA 1851
CPU TypeIntel Core Ultra Processors (Series 2) (LGA1851)
Supported CPU TechnologiesHybrid Technology
Turbo Boost Max 3.0 Technology
Thermal Velocity Boost
Adaptive Boost Technology
ChipsetIntel B860
Onboard Video ChipsetIntel Xe LPG Graphics Architecture
Number of Memory Slots4x288pin (DDR5)
Memory StandardDDR5 5600
Maximum Memory Supported256GB
Channel SupportedDual Channel
Memory Performance ProfileIntel XMP 3.0
ECC SupportedNon-ECC
Buffer SupportedUn-buffered
PCI Express 5.0 x161 x PCI Express 5.0 x16
PCI Express 4.0 x161 x PCI Express 4.0 x16
PCI Express x161 x PCI Express x16
PCI Express x41 x PCI Express x4
Other Slots1 x M.2 Socket (Key E)
Serial ATA (SATA)4 x SATA 6Gb/s
M.23 x M.2 (Support PCIe 5.0 x4 & PCIe 4.0 x4)
SATA RAID0/1/5/10
Audio ChipsetRealtek ALC897
Audio Channels7.1 Channels
LAN ChipsetRealtek RTL8125BG
Max LAN Speed2.5Gbps
Wireless LANWiFi IEEE 802.11 a / b / g / n / ac / ax / be
BluetoothYes
Back I/O Ports2 x Antenna Ports, 1 x HDMI, 1 x USB 3.2 Gen1 Type-C, 3 x USB 3.2 Gen1 Type-A, 2 x USB 2.0, 1 x RJ-45 LAN, 3 x HD Audio Jacks
Video PortsHDMI
S-Video0
HDMI1 x HDMI
RJ451 x RJ45
USB 3.17 x USB 3.1
USB 3.06 x USB 3.0
USB 1.1/2.05 x USB 3.0 + 6 x USB 2.0
USB Type-C2 x USB 3.2 Gen1 Type-C
Audio Ports3 Ports
Onboard USB1 x USB 3.2 Gen1 header, 1 x USB Type-C header with USB 3.2 Gen1, 2 x USB 2.0 headers
Windows 11Supported
Form FactorMicro ATX
LED LightingNone RGB
Dimensions (W x L)9.6" x 9.6"
Power Pin24 Pin
Shipping weight1.27 kg
Package size295 × 267 × 64 mm

Questions about this item

How can I confirm the board is working after the first boot?

The system should POST and display the ASRock splash screen, then enter the BIOS where the 10+1+1+1+1 Dr.MOS power phases and installed DDR5 memory are reported correctly.

What comes in the box and what must I purchase separately?

The motherboard, I/O shield, SATA cables, M.2 screws and quick-install guide are included; you must buy an LGA 1851 Intel Core Ultra Series 2 processor, DDR5 modules, storage drives and a graphics card separately.

Which DDR5 speed should I choose for this board?

The board runs DDR5 at 5600 MT/s by default and supports Intel XMP 3.0 profiles up to 8666+ MT/s when overclocked, so select a kit rated for your desired speed within that range.

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