ASUS PRIME series motherboards are expertly engineered to unleash the full potential of the latest Intel® Core™ Ultra Processors (Series 2). Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, the PRIME B860M-A-CSM motherboard provides users and PC DIY builders with a range of performance optimizations via intuitive software and firmware features. It’s designed to be Advanced AI PC-ready, offering the power and connectivity needed for demanding AI applications.

SPECIFICATIONS

• CPU
  • Support Intel® Core™ Ultra Processors (Series 2), LGA1851*
  • Supports Intel® Turbo Boost Technology 2.0 and Intel® Turbo Boost Max Technology 3.0
  • *Refer to the ASUS CPU support list.
  • **Intel® Turbo Boost Max Technology 3.0 support depends on the CPU types.
• Chipset: Intel® B860 Chipset
• Memory
  • 4 x DDR5 DIMM slots
  • Maximum: 256GB
  • Supports up to 8666+MT/s (OC), Non-ECC, Un-buffered, Clocked Unbuffered DIMM (CUDIMM)*
  • Dual channel memory architecture
  • DIMM Fit
  • Supports Intel® Extreme Memory Profile (XMP) memory module
  • ASUS Enhanced Memory Profile III(AEMPIII)
  • * Supported memory types, data rate (speed), and number of DRAM modules vary depending on the CPU and memory configuration, for more information please refer to the ASUS Memory Support list.
  • * Adjustments will be made based on the specifications of mass-produced memory products available on the market.
  • * Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.
• Graphics
  • 2 x DisplayPort**
  • 1 x HDMI™ port***
  • * Graphics specifications may vary between CPU types. Please refer to www.intel.com for any updates.
  • ** Supports max. 4K@60Hz as specified in DisplayPort 1.4.
  • *** Supports 4K@60Hz as specified in HDMI 2.1.
  • ***** VGA resolution support depends on processors' or graphic cards' resolution.
  • ******While installing the operating system, please ensure that your monitor is connected to the HDMI port on the back I/O panel or to a discrete graphics card.
• Expansion Slots
  • Intel® Core™ Ultra Processors (series 2)
    • 1 x PCIe 5.0 x16 slot
  • Intel® B860 Chipset
    • 1 x PCIe 4.0 x16 slot (supports x4 mode)
    • 1 x PCIe 4.0 x1 slot
  • To ensure compatibility of the device installed, please refer to ASUS Support for the list of supported peripherals.
• Storage
  • Total supports 2x M.2 slots and 4x SATA 6Gb/s ports
  • Intel® Core™ Ultra Processors (Series 2) *
    • M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)
  • Intel® B860 Chipset
    • M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 modes)
    • 4x SATA 6Gb/s ports
  • * Intel® Rapid Storage Technology supports SATA RAID 0/1/5/10.
• Ethernet: 1 x Realtek 2.5Gb Ethernet with ASUS LANGuard
• USB
  • Rear USB (Total 8 ports)
    • 1x USB 20Gbps port (1x USB Type-C®)
    • 1x USB 10Gbps port (1x Type-A )
    • 2x USB 5Gbps ports (2x Type-A)
    • 4x USB 2.0 ports (4x Type-A)**
  • Front USB (Total 5 ports)
    • 1x USB 10Gbps connector (supports USB Type-C®)
    • 1x USB 5Gbps header supports 2 additional USB 5Gbps ports
    • 1x USB 2.0 header supports 2 additional USB 2.0 ports
  • * - USB Type-C® power delivery output: max. 5V/3A
  • ** - USB_E1 port, USB_E2 port, USB_E3 port and USB_E4 port share the bandwidth.
• Audio: Realtek 7.1 Surround Sound High Definition Audio CODEC
• Operating System: Windows 11 (22H2 & later), Windows 10 64-bit(21H2 & later)
• Form Factor: Micro-ATX (24.4 x 24.4 cm)
• Warranty: 3 years

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