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ATX motherboard in dark finish with four DDR5 slots and two large M.2 heatsinks

ASRock

ASRock B860 Pro RS Intel motherboard

SKU CH-RVAM-R0AAF MPN B860 Pro RS

ATX board for Intel Core Ultra Series 2 with four DDR5 slots up to 8666 MT/s, PCIe 5.0 x16, two M.2 sockets, four SATA ports, 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 B860 Pro RS

Struck-through versions exist but are not stocked here.

  • Ready for Intel Core Ultra Series 2 processors on LGA 1851
  • 4 DDR5 slots reach 8666 MT/s overclocked with XMP 3.0
  • 256 GB maximum memory capacity across four channels
  • PCIe 5.0 x16 slot plus PCIe 4.0 x4 slot for graphics and add-in cards
  • Blazing M.2 at 128 Gb/s plus two Hyper M.2 at 64 Gb/s each

Socket LGA 1851 et chipset B860

Cette carte mère ATX accueille les processeurs Intel Core Ultra de série 2 via un socket LGA 1851. Le chipset B860 gère quatre emplacements DDR5 jusqu'à 256 Go en dual channel avec profils XMP 3.0 et prise en charge des CUDIMM. Un slot PCIe 5.0 x16 et un second slot PCIe 4.0 x4 assurent l'extension graphique et additionnelle.

Alimentation 10+1+1+1+1 Dr.MOS

L'étage d'alimentation utilise une conception 10+1+1+1+1 phases avec Dr.MOS pour le VCore, le GT et le SA. Quatre connecteurs SATA 6 Gbit/s et trois sockets M.2 (un Gen5 x4 128 Gbit/s, deux Gen4 x4 64 Gbit/s) complètent le stockage. Le contrôleur Dragon RTL8125BG assure le réseau 2,5 Gbit/s et le codec Realtek ALC897 délivre un son 7.1 canaux.

Accessoires fournis et logiciels

Le bundle comprend un cache I/O, des câbles SATA, des vis pour M.2 et la documentation. L'utilitaire ASRock Polychrome SYNC pilote l'éclairage ARGB et RGB adressable. Le BIOS intègre Intel VMD pour la gestion NVMe et la mise à jour instantanée Instant Flash sans clé USB.

Highlights

  • Ready for Intel Core Ultra Series 2 processors on LGA 1851
  • 4 DDR5 slots reach 8666 MT/s overclocked with XMP 3.0
  • 256 GB maximum memory capacity across four channels
  • PCIe 5.0 x16 slot plus PCIe 4.0 x4 slot for graphics and add-in cards
  • Blazing M.2 at 128 Gb/s plus two Hyper M.2 at 64 Gb/s each

Specifications

BrandASRock
ModelB860 Pro RS
Part NumberB860 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 4.0 x16Chipset:
- 1 x PCIe 4.0 x16 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)
6 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)
1 x USB 3.2 Gen1 Header (Supports 2 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 Connectors (4-pin) (Smart Fan Speed Control)***
4 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_FAN1~4 and AIO_PUMP support the fan power up to 3A (36W).
CPU_FAN2, CHA_FAN1~4 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 FactorATX
Dimensions (W x L)12.0" x 9.6"
Power Pin1 x 24 pin ATX Power Connector
2 x 8 pin 12V Power Connectors (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
- Pre-Installed I/O Shield
Ultrafast Connectivity
- 2.5G LAN, 802.11axe Wi-Fi 6E Module
EZ Update
- BIOS Flashback Button
- ASRock Auto Driver Installer
EZ Troubleshooter
- ASRock Post Status Checker
Package Contents2 x SATA Data Cables
2 x ASRock WiFi 2.4/5/6 GHz Antennas
Shipping weight1.72 kg
Package size356 × 279 × 76 mm

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How do I install the CPU into the LGA 1851 socket without bending pins?

Lift the socket lever, align the processor triangle with the socket corner, place the CPU gently without pressure, lower the frame and lock the lever; the common mistake is forcing the chip before the frame is fully closed.

What upkeep does the 10+1+1+1+1 Dr.MOS power phase design require over time?

Dust the VRM heatsinks and chassis fans every few months; the Dr.MOS stages have no user-serviceable parts, so no thermal-pad replacement or firmware action is needed unless temperatures rise unexpectedly.

Which limit appears first when the Blazing M.2 socket runs at PCIe Gen5x4 128 Gb/s under sustained writes?

The SSD controller typically hits its thermal throttle point before the motherboard lane saturates; adding a heatsink to the M.2_1 drive keeps sequential throughput stable.

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