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Dark green Micro-ATX board with silver heatsinks, four DDR5 slots and a metal-reinforced PCIe slot

ASRock

ASRock B860M Pro RS Intel motherboard LGA 1851

SKU CH-MXXS-EECKH MPN B860M Pro RS

Micro-ATX board for Intel Core Ultra Series 2 CPUs, four DDR5 slots up to 8666 MT/s, PCIe 5.0 x16, one Gen5 M.2, two Gen4 M.2, four SATA, Realtek 7.1 audio and Dragon RTL8125BG LAN

  • CPU Socket TypeLGA 1851
  • CPU TypeIntel Core Ultra Processors (Series 2)
  • ChipsetIntel B860
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardUp to DDR5 8666+(OC)
  • Maximum Memory Supported256GB

Option B860M Pro RS

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  • Supports Intel Core Ultra Series 2 processors on LGA 1851 socket
  • 10+1+1+1+1 Dr.MOS power phases deliver stable CPU current
  • Four DDR5 slots up to 8666+(OC) with XMP 3.0 support
  • PCIe 5.0 x16 and M.2 Gen5x4 128 Gb/s for fastest graphics and storage
  • 1 channel Realtek ALC897 audio with Nahimic enhancement

Socket and processor support

The board uses the LGA 1851 socket for Intel Core Ultra Series 2 processors. The Intel B860 chipset provides the platform foundation. Four DDR5 slots accept up to 256 GB in dual-channel mode.

Memory capacity and speed limits

Memory runs up to 8666 MT/s with XMP 3.0 profiles on non-ECC unbuffered DIMMs. The 256 GB ceiling is reached only when all four slots are populated with high-density modules. Two slots leave headroom for later expansion.

Expansion slots and onboard audio

One PCIe 5.0 x16 slot and one PCIe 4.0 x4 slot handle graphics and add-in cards. Three M.2 sockets support 2280 drives, with the top slot wired for Gen5 x4 speeds. Realtek ALC897 delivers 7.1-channel audio with Nahimic software.

Fordele

  • Supports Intel Core Ultra Series 2 processors on LGA 1851 socket
  • 10+1+1+1+1 Dr.MOS power phases deliver stable CPU current
  • Four DDR5 slots up to 8666+(OC) with XMP 3.0 support
  • PCIe 5.0 x16 and M.2 Gen5x4 128 Gb/s for fastest graphics and storage
  • 1 channel Realtek ALC897 audio with Nahimic enhancement

Specifikationer

BrandASRock
ModelB860M Pro RS
Part NumberB860M Pro RS
CPU Socket TypeLGA 1851
CPU TypeIntel Core Ultra Processors (Series 2)
ChipsetIntel B860
Number of Memory Slots4x288pin (DDR5)
Memory StandardUp to DDR5 8666+(OC)
Maximum Memory Supported256GB
Channel SupportedDual Channel
Memory Performance ProfileIntel XMP 3.0
Memory FeatureSupports DDR5 non-ECC, un-buffered memory up to 8666+(OC)*
Supports Clocked Unbuffered DIMM (CUDIMM)
PCI Express 5.0 x16CPU:
- 1 x PCIe 5.0 x16 Slot (PCIE1), supports x16 mode*
PCI Express x4Chipset:
- 1 x PCIe 4.0 x4 Slot (PCIE2), supports x4 mode*
Serial ATA (SATA)4 x SATA 6Gb/s
M.2CPU:
- 1 x Blazing M.2 Socket (M2_1, Key M), supports type 2280 PCIe Gen5x4 (128 Gb/s) mode*
Chipset:
- 1 x Hyper M.2 Socket (M2_2, Key M), supports type 2230/2242/2260/2280 PCIe Gen4x4 (64 Gb/s) mode*
- 1 x Hyper M.2 Socket (M2_3, Key M), supports type 2280 PCIe Gen4x4 (64 Gb/s) mode*
* Supports Intel Volume Management Device (VMD)
Supports NVMe SSD as boot disks
SATA RAIDSupports RAID 0, RAID 1, RAID 5 and RAID 10 for SATA storage devices
Audio ChipsetRealtek ALC897
Audio Channels7.1 CH HD Audio with Content Protection
LAN ChipsetDragon RTL8125BG
Max LAN Speed2.5Gbps
Back I/O Ports2 x Antenna Mounting Points
1 x HDMI Port
1 x DisplayPort 1.4
1 x USB 3.2 Gen2x2 Type-C Port (20 Gb/s)
3 x USB 3.2 Gen1 Ports
2 x USB 2.0 Ports
1 x RJ-45 LAN Port
1 x BIOS Flashback Button
HD Audio Jacks: Line in / Front Speaker / Microphone
Onboard USB2 x USB 2.0 Headers (Support 4 USB 2.0 ports)
2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports)
1 x Front Panel Type C USB 3.2 Gen1 Header
Other Connectors1 x SPI TPM Header
1 x Power LED and Speaker Header
1 x RGB LED Header*
3 x Addressable LED Headers**
2 x CPU Fan Connector (4-pin) (Smart Fan Speed Control)***
3 x Chassis Fan Connectors (4-pin) (Smart Fan Speed Control)***
1 x AIO Pump Fan Connector (4-pin) (Smart Fan Speed Control)***
1 x Front Panel Audio Connector
* Supports in total up to 12V/3A, 36W LED Strip
** Support in total up to 5V/3A, 15W LED Strip
*** CPU_FAN1 supports the fan power up to 1A (12W).
CPU_FAN2, CHA_FAN1~3 and AIO_PUMP support the fan power up to 3A (36W).
CPU_FAN2, CHA_FAN1~3 and AIO_PUMP can auto detect
BIOS Feature256Mb AMI UEFI Legal BIOS with GUI support
SoftwareSoftware
- ASRock Motherboard Utility (A-Tuning)
- ASRock Dragon 2.5G LAN Software
- ASRock Polychrome SYNC
UEFI
- ASRock EZ Mode
- ASRock Full HD UEFI
- ASRock My Favorites in UEFI
- ASRock Auto Driver Installer
- ASRock Instant Flash
Windows 11Windows 11 64-bit
Form FactorMicro ATX
Dimensions (W x L)9.6" x 9.6"
Power Pin1 x 24 pin ATX Power Connector
1 x 8 pin 12V Power Connector (Hi-Density Power Connector)
1 x 4 pin 12V Power Connector (Hi-Density Power Connector)
FeaturesSuperb Productivity
- PCIe Gen5 (Graphics, M.2)
- Dual Channel DDR5
Rock-Solid Durability
- 10+1+1+1+1 Power Phase, Dr.MOS for VCore+GT+SA+VNNAON
- Pre-Installed I/O Shield
Ultrafast Connectivity
- 2.5G LAN
EZ Update
- BIOS Flashback Button
- ASRock Auto Driver Installer
EZ Troubleshooter
- ASRock Post Status Checker
Package Contents2 x SATA Data Cables
1 x Screw for M.2 Socket
Forsendelsesvægt2.20 kg
Pakkestørrelse310 × 280 × 70 mm

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Spørgsmål om denne vare

Can I keep my DDR5 memory kit when upgrading to this B860M Pro RS?

The board has four 288-pin DDR5 slots supporting dual-channel operation up to 8666+(OC) with Intel XMP 3.0 and CUDIMM support, maximum capacity 256GB.

How can I verify the board is running correctly after first boot?

POST codes on the debug display and the Nahimic audio splash confirm CPU, memory and Realtek ALC897 7.1 audio initialisation; Dragon RTL8125BG LAN link lights show network readiness.

Which cables and modules ship with the motherboard and what must I source separately?

Box includes the Micro-ATX board, I/O shield, SATA cables, M.2 screws and documentation; DDR5 DIMMs, CPU, GPU, NVMe SSDs and Wi-Fi module for the Key-E slot are purchased separately.

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