ASUS PRIME B860M-A-CSM Motherboard

ASUS PRIME B860M-A-CSM – Advanced AI PC Ready Intel LGA1851 Micro-ATX Motherboard

The ASUS PRIME B860M-A-CSM is engineered to unleash the full computing power of the next-generation Intel® Core™ Ultra Processors (Series 2) on the LGA1851 socket. Perfect for deployment in enterprise workstations or custom commercial builds, this micro-ATX motherboard blends robust electrical engineering with extensive thermal defense. As part of the ASUS Corporate Stable Model (CSM) program, it provides organizations with up to 36-month supply longevity and the ASUS Control Center Express IT software suite for effortless network management.

Packed with cutting-edge architectures, the PRIME B860M-A-CSM includes blistering PCIe 5.0 x16 lanes for professional GPUs, multi-gigabit 2.5Gb Ethernet, high-bandwidth DDR5 layout architecture, and ultra-fast 20Gbps USB Type-C connectivity to maximize your workflow throughput.

Key Features & Strategic Highlights

• Intel® LGA1851 Socket Ready: Optimized for elite-tier performance workloads powered by the groundbreaking Intel® Core™ Ultra Processors (Series 2).
• Enhanced Power Delivery: Combines an efficient 7+1+1+1 digital VRM power stage array (rated at 80A each) to deliver absolutely clean, reliable voltage management directly to the CPU.
• Next-Gen Data Horizons: Built with one premium PCIe 5.0 x16 slot along with an onboard PCIe 5.0 M.2 layout to deliver up to 128Gbps storage bandwidth while avoiding thermal throttling via a integrated aluminum heatsink.
• DDR5 Performance Engine: Supports dual-channel DDR5 system modules up to 256GB with ASUS Enhanced Memory Profile III (AEMP III) to achieve fast operational memory stability.
• ASUS Corporate Stable Model (CSM): Includes a complimentary license for ASUS Control Center Express—a server-grade, centralized IT monitoring program—alongside stable product roadmaps to lower overall ownership costs.
• Ultrafast SuperSpeed Networking: Equipped with a physical Realtek 2.5Gb Ethernet connection and ASUS LANGuard protection for reliable internet speeds and network security.

Full Technical Specifications

Hardware Segment	Technical Details
Processor Support	Intel® Core™ Ultra Processors (Series 2), Socket LGA1851 Architecture
Chipset Layout	Intel® B860 Platform Hub
Memory Subsystem	4x DIMM Slots, Max 256GB Capacity, DDR5 Architecture, Non-ECC, Intel® XMP & ASUS AEMP III Support
Onboard Graphics	2x DisplayPort 1.4 (Max 4K @60Hz) | 1x HDMI 2.1 (Max 4K @60Hz)
Expansion Slots	1x PCIe 5.0 x16 Slot (SafeSlot Armor) 1x PCIe 4.0 x16 Slot (Supports x4 operational mode) 1x PCIe 4.0 x1 Slot
Storage Interfaces	M.2_1 (CPU): 1x M.2 Slot (Key M, Type 2242/2260/2280 via PCIe 5.0 x4 mode) M.2_2 (Chipset): 1x M.2 Slot (Key M, Type 2242/2260/2280 via PCIe 4.0 x4 mode) SATA Ports: 4x SATA 6Gb/s Connectors
Wired Networking	1x Realtek 2.5Gb Ethernet Port featuring ASUS LANGuard spike protection
Rear I/O USB Connectivity	1x USB 20Gbps Type-C® port 1x USB 10Gbps Type-A port 2x USB 5Gbps Type-A ports 4x USB 2.0 Type-A legacy ports
Internal Board Headers	1x USB 10Gbps Type-C® connector, 1x USB 3.2 Gen 1 header (supports 2 extra ports), 1x USB 2.0 header, 1x Thunderbolt™ (USB4®) header, 3x Addressable Gen 2 RGB headers, 1x Aura RGB header
High Definition Audio	Realtek 7.1 Surround Sound HD Audio Codec, Audio Shielding Trace, Premium Audio Capacitors
Commercial Features	ASUS Corporate Stable Model program, ASUS Control Center Express IT Suite, SPI TPM Header (14-1 pin)
Form Factor & Size	Micro-ATX Form Factor: 9.6 in x 9.6 in (24.4 cm x 24.4 cm)