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Asus prime b860-plus-csm atx business motherboard lga 1851 intel b860 ddr5 pcie 5.0 triple m.2 USB-c 20GBps black
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Description
Item No.
007eec30-6197-49c7-a021-5466d9a365ec
ASUS Prime B860-PLUS-CSM — Business-Grade ATX for Intel Core Ultra
LGA 1851 · Intel B8604× DDR5 up to 256GBPCIe 5.0 x16 + Triple M.2USB-C 20GBps · 2.5GBE
The ASUS Prime B860-PLUS-CSM is a full-size ATX business motherboard built on the Intel B860 chipset and the LGA 1851 socket, supporting Intel Core Ultra Series 2 (Arrow Lake) desktop processors. Sold under ASUS part number 90MB1K00-M0EAYC (EAN 4711387819869), it combines four DDR5 slots, a PCIe 5.0 x16 graphics slot, three M.2 slots, a fast U
Attributes
Motherboard Characteristics
- Processor Socket: Socket 1851
Details
ASUS Prime B860-PLUS-CSM — Business-Grade ATX forIntel Core Ultra
LGA 1851 · Intel B8604× DDR5 up to 256GBPCIe 5.0 x16 + Triple M.2USB-C 20GBps · 2.5GBE
The ASUS Prime B860-PLUS-CSM is a full-size ATX business motherboard built on the Intel B860 chipset and the LGA 1851 socket, supportingIntel Core Ultra Series 2 (Arrow Lake) desktop processors. Sold under ASUS part number 90MB1K00-M0EAYC (EAN 4711387819869), it combines four DDR5 slots, a PCIe 5.0 x16 graphics slot, three M.2 slots, a fast USB-C 20GBps port and 2.5GBE networking. As a CSM (Corporate Stable Model) board it adds business-focused manageability and extended product availability. Typically in stock with fast delivery across Cyprus.
Compatibility — read before buying
This is an LGA 1851 board supporting onlyIntel Core Ultra Series 2 (Arrow Lake) desktop CPUs — not LGA 1700 (12th/13th/14th Gen). It uses DDR5 memory only (no DDR4) and requires an ATX (or larger) case. This is the wired CSM model; for built-in wireless choose the Prime B860-PLUS WIFI.
Best For
✓Business and corporateIntel Core Ultra desktops
✓Professional workstations needing triple NVMe storage
✓Full-ATX builds with PCIe 5.0 graphics
✓High-capacity DDR5 (up to 256GB) workloads
✓Fast peripherals via USB-C 20GBps
✓IT-managed fleets needing stable, long-availability hardware
Key Features
Triple M.2 + 4× SATA
Three M.2 slots — M.2_1 at PCIe 5.0 x4 plus two PCIe 4.0 x4 (one supporting 22110) — and four SATA 6GB/s ports give exceptional storage flexibility.
PCIe 5.0 graphics
A PCIe 5.0 x16 slot delivers full bandwidth for current and next-generation graphics cards in demanding professional and gaming workloads.
Fast USB-C 20GBps
A rear USB 20GBps Type-C port with DisplayPort Alt Mode, plus dual USB 10GBps Type-A, makes quick work of external drives and displays.
CSM business value
Corporate Stable Model status brings ASUS Control Center manageability, extended availability and stability features valued by IT and business buyers.
Technical Specifications
| Identification | |
| Part Number | 90MB1K00-M0EAYC |
| EAN / GTIN | 4711387819869 |
| Model | ASUS Prime B860-PLUS-CSM |
| Brand | ASUS |
| Platform | |
| Chipset | Intel B860 |
| Socket | LGA 1851 |
| CPU Support | Intel Core Ultra Processors (Series 2) — Arrow Lake desktop |
| Form Factor | ATX |
| Program | CSM — Corporate Stable Model |
| Memory | |
| Slots | 4× DDR5 DIMM (Dual-Channel) |
| Max Capacity | 256GB |
| Speed | Up to 8666+ MT/s (OC) |
| Expansion & Storage | |
| PCIe Slot | 1× PCIe 5.0 x16 |
| M.2 | M.2_1 PCIe 5.0 x4 + M.2_2 PCIe 4.0 x4 (up to 22110) + M.2_3 PCIe 4.0 x4 |
| SATA | 4× SATA 6GB/s |
| Connectivity & I/O | |
| LAN | Realtek 2.5GBE LAN (RJ-45) |
| Rear USB | 1× USB 20GBps Type-C (DP Alt Mode), 2× USB 10GBps Type-A, 1× USB 5GBps Type-A, 2× USB 2.0 |
| Audio | HD Audio |
| Lighting | Aura Sync addressable RGB header support |
| Other | |
| Colour | Black |
| Operating System | Windows 11 64-bit |
Frequently Asked Questions
Singular Expert Insight
The Prime B860-PLUS-CSM targets business and professional builds: its triple M.2 layout and four DIMM slots outclass entry boards like the Prime B860M-K, while CSM status adds the manageability and long-term availability IT departments need. If you want the same board with onboard Wi-Fi, look at the Prime B860-PLUS WIFI; for compact builds the MSI MPG B860I Edge Ti WiFi is a premium ITX alternative. Equip it with a fast PCIe Gen5 internal SSD in the primary M.2 slot.
Buyer's Guide
Buy it if
You want a stable, well-connected full-ATX business board for anIntel Core Ultra build, with triple M.2, PCIe 5.0 and USB-C 20GBps.
Skip it if
You need built-in Wi-Fi, a compact form factor, or flagship overclocking VRMs — choose a WIFI or Z890 model.
Also consider
The ASUS Prime B860-PLUS WIFI for integrated wireless, or a Z890 board for CPU overclocking.