ASRock B860M Pro RS LGA1851 Intel B860 Micro ATX Motherboard
ASRock
ASRock B860M Pro RS LGA1851 Intel B860 Micro ATX Motherboard
The ASRock B860M Pro RS is a Micro ATX motherboard built for Intel Core Ultra Series 2 systems that need DDR5 memory overclocking support and modern connectivity without the size of a full ATX board. It balances stable performance with a compact form factor, suited to builders wanting efficiency and reliability in a space-conscious build.
Why this product
DDR5 overclocking with pre-tested profiles
Supports DDR5 up to 8666+ MHz on a 6-layer PCB designed for stable memory performance. ASRock includes pre-tested profiles to simplify enabling extreme memory speeds.
PCIe 5.0 and Gen4 NVMe storage
One Gen5x4 M.2 slot for the fastest SSDs, plus two Gen4x4 M.2 slots and four SATA ports for mixed storage configurations.
One-click BIOS flashback
Update to the latest BIOS with just a USB drive and power supply—no CPU, RAM or other components required.
Dual video outputs
HDMI and DisplayPort 1.4 let you run dual monitors or switch displays without adapter switching.
10+1+1+1+1 power phases
Robust power delivery with Dr.MOS for the CPU core, GT, and SA rails ensures stable overclocking and power efficiency.
- Form FactorMicro ATX
- SocketLGA1851
- ChipsetIntel B860
- Memory Support4 x DDR5 DIMMs, up to DDR5 8666+ (OC), 256 GB max
- Storage1 x M.2 Gen5x4, 2 x M.2 Gen4x4, 4 x SATA3
- Power Delivery10+1+1+1+1 phases, Dr.MOS
- Rear USB1 x USB 3.2 Gen2x2 Type-C, 3 x USB 3.2 Gen1 Type-A, 2 x USB 2.0
- Video Outputs1 x HDMI, 1 x DisplayPort 1.4
- SKUASR-3336
- EAN4711581490277
- Intel Core Ultra Processors Series 2 (LGA1851 socket).
- DDR5 DIMMs in dual-channel configuration, up to 256 GB total.
- M.2 NVMe SSDs: PCIe Gen5x4 and Gen4x4 types in 2230, 2242, 2260, and 2280 form factors.
- SATA 3.0 drives and optical drives via four SATA connectors.
- DDR4 memory—this board requires DDR5.
- Older Intel or AMD processors—LGA1851 is exclusive to Intel's latest generation.
Best for
- Builders upgrading to Intel Core Ultra Series 2 who want DDR5 overclocking support.
- Small form-factor builds where Micro ATX fits space or aesthetic constraints better than full ATX.
- Users combining fast NVMe storage with legacy SATA drives in the same system.
- Buyers who value ease of BIOS updates and pre-tested memory profiles over manual tweaking.
Trade-offs
- DDR4-only budgets—the board requires DDR5, which carries a higher cost per gigabyte than DDR4.
- Older CPU owners—only Intel Core Ultra Series 2 processors fit the LGA1851 socket.
- Builders needing more than four SATA drives—only four SATA connectors are available.
- Systems requiring WiFi in the box—the board supports a WiFi M.2 module but does not include one.
- Ultra-high PCIe lane density—two M.2 slots run PCIe Gen4, not Gen5.
Modern and futuristic, with the attractive specifications and perfect balance, the Race Sport (RS) Edition is the evolution of the most popular PRO series motherboard.
Optimized for stability, durability, and efficiency. It combines reliable performance, user-friendly features and streamlined style for daily computing tasks.
The 6 Layer PCB provides stable signal traces and power shapes delivering lower temperature and higher energy efficiency for memory overclocking! Thus, it's able to support the latest memory modules with most extreme memory performance!
Derived from the "built for stable and reliable" designing concept, ASRock does not compromise on any details. This motherboard is built with high quality materials, enthusiasts are able to enjoy the boost of DDR5 memory overclocking performance by enabling the pre-tested profiles.
Get the most convenient BIOS flashing with just a simple click. Users can easily achieve the latest BIOS support with a USB and a power supply. No CPU, RAM or other components are required.
General
| Brand | ASRock |
|---|---|
| Model | B860M Pro RS |
| Form Factor | Micro ATX |
| Socket | LGA1851 |
| Chipset | Intel B860 |
| PCB Layers | 6 Layer |
Processor & Memory
| CPU Support | Intel Core Ultra Processors Series 2 (LGA1851); Intel Hybrid Technology; Intel Turbo Boost Max 3.0 |
|---|---|
| Memory Slots | 4 x DDR5 DIMMs, Dual Channel |
| Max Memory | 256 GB |
| Memory Speed | Up to DDR5 8666+ (OC) |
Storage & Expansion
| M.2 Slot 1 (Blazing) | PCIe Gen5x4 (128 Gb/s), Type 2280 |
|---|---|
| M.2 Slot 2 (Hyper) | PCIe Gen4x4 (64 Gb/s), Type 2230/2242/2260/2280 |
| M.2 Slot 3 (Hyper) | PCIe Gen4x4 (64 Gb/s), Type 2280 |
| SATA Ports | 4 x SATA3 6.0 Gb/s |
| RAID Support | RAID 0, 1, 5, 10 for SATA devices |
| PCIe Slots | 1 x PCIe 5.0 x16, 1 x PCIe 4.0 x4, 1 x M.2 Key E for WiFi |
Power & Connectivity
| Power Delivery | 10+1+1+1+1 phases, Dr.MOS for VCore+GT+SA |
|---|---|
| Rear USB | 1 x USB 3.2 Gen2x2 Type-C (20 Gb/s), 3 x USB 3.2 Gen1 Type-A, 2 x USB 2.0 |
| Front Headers | 1 x USB 3.2 Gen1 Type-C, 4 x USB 3.2 Gen1, 4 x USB 2.0 |
| LAN | Realtek 2.5G LAN (Dragon RTL8125BG) |
| Audio | Realtek ALC897 7.1 CH HD Audio Codec, Nahimic Audio |
| Video Output | 1 x HDMI, 1 x DisplayPort 1.4 |
| WiFi Support | M.2 Key E slot for WiFi module (not included) |
Features
| BIOS Flashback | Yes, one-click with USB |
|---|---|
| M.2 Bottom Heatsink | Yes |
| Pre-installed I/O Shield | Yes |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.