ASUS PRIME B860M-A CSM DDR5 Intel Motherboard
MPN ASUS-PRIME-B860M-A-CSM-DDR5-MOTHERBOARD · Brand ASUS · mATX
Features of ASUS PRIME B860M-A CSM DDR5 Intel Motherboard 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, offe
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Overview
Features of ASUS PRIME B860M-A CSM DDR5 Intel Motherboard
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.
ASUS Corporate Stable Model
ASUS Control Center Express
AI Solutions
Robust power design
AEMP III for Ultimate DDR5 Performance
DIMM Fit
Two M.2 slots (up to 128Gbps)
Cooler by design
ASUS Fan Xpert 2+
Cooler compatibility
Empowering connections
USB 20Gbps port
PCIe 5.0 slot
Personalization
DIY friendly
Pre-mounted I/O shield
Our pre-installed I/O shield safeguards ports, simplifies the build process, increases functionality and enhances aesthetics for PC DIY enthusiasts.
Specifications of ASUS PRIME B860M-A CSM DDR5 Intel Motherboard
| Model | PRIME B860M-A-CSM |
| CPU | Supports Intel® Core™ Ultra Processors (Series 2), LGA1851* Supports Intel® Turbo Boost Technology 2.0 and Intel® Turbo Boost Max Technology 3.0** * Refer to https://www.asus.com/support/download-center/ for CPU support list. ** Intel® Turbo Boost Max Technology 3.0 support depends on the CPU types. |
| Chipset | Intel® B860 Chipset |
| Memory | 4 x DIMM slots, max. 256GB, DDR5 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 CPU/Memory Support list under the Support tab of product information site or visit https://www.asus.com/support/download-center/. * Adjustments will be made based on the specifications of mass-produced memory products available on the market. * Non-ECC, un-buffered DDR5 memory supports 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.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. |
| 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 https://www.asus.com/support/download-center/ for the list of supported peripherals.1 x PCIe 4.0 x16 slot Intel® B860 Chipset 2 x PCIe 4.0 x1 slots - To ensure compatibility of the device installed, please refer to https://www.asus.com/support/download-center/ for the list of supported peripherals. |
| Storage | Total supports 2 x M.2 slots and 4 x 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) 4 x SATA 6Gb/s ports * Intel® Rapid Storage Technology supports SATA RAID 0/1/5/10. 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 mode) 4 x SATA 6Gb/s ports * Intel® Rapid Storage Technology supports SATA RAID 0/1/5/10. |
| Ethernet | 1 x Realtek 2.5Gb Ethernet ASUS LANGuardASUS LANGuard |
| USB | Rear USB (Total 8 ports) 1 x USB 20Gbps port (1 x USB Type-C®) 1 x USB 10Gbps port (1 x Type-A ) 2 x USB 5Gbps ports (2 x Type-A) 4 x USB 2.0 ports (4 x Type-A)** Front USB (Total 5 ports) 1 x USB 10Gbps connector (supports USB Type-C® ) 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports 1 x 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.1 x USB 10Gbps port (1 x Type-A) 2 x USB 5Gbps ports (2 x Type-A) 3 x USB 2.0 ports (3 x Type-A)** Front USB (Total 7 ports) 1 x USB 5Gbps connector (supports USB Type-C®) 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports 2 x USB 2.0 headers support 4 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* - Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking - Supports up to 24-Bit/192 kHz playback Audio Features - Audio Shielding - Premium audio capacitors - Dedicated audio PCB layers * A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking - Supports up to 24-Bit/192 kHz playback Audio Features - Audio Shielding - Premium audio capacitors - Dedicated audio PCB layers * A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output. |
| Back Panel I/O Ports | 1 x USB 20Gbps port (1 x USB Type-C®) 1 x USB 10Gbps port (1 x Type-A) 2 x USB 5Gbps ports (2 x Type-A) 4 x USB 2.0 ports (4 x Type-A ) 2 x DisplayPort 1 x HDMI™ port 1 x Realtek 2.5Gb Ethernet port 3 x Audio jacks2 x USB 5Gbps ports (2 x Type-A) 3 x USB 2.0 ports (3 x Type-A) 1 x DisplayPort 1 x HDMITM port 1 x Realtek 2.5Gb Ethernet port 3 x Audio jacks 1 x PS/2 Keyboard/Mouse combo port |
| Internal I/O Connectors | Fan and Cooling Related 1 x 4-pin CPU Fan header 1 x 4-pin CPU OPT Fan header 1 x 4-pin AIO Pump header 3 x 4-pin Chassis Fan headers Power Related 1 x 24-pin Main Power connector 1 x 8-pin +12V CPU Power connector Storage Related 2 x M.2 slots (Key M) 4 x SATA 6Gb/s ports USB 1 x USB 10Gbps connector (supports USB Type-C® ) 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports 1 x USB 2.0 header supports 2 additionalUSB 2.0 ports Miscellaneous 3 x Addressable Gen 2 headers 1 x Aura RGB header 1 x Clear CMOS header 1 x Chassis Intrusion header 1 x COM Port header 1 x Front Panel Audio header (F_AUDIO) 1 x S/PDIF Out header 1 x SPI TPM header (14-1 pin) 1 x 10-1 pin Front System Panel header 1 x Thunderbolt™ (USB4®) header1 x 4-pin CPU Fan header 2 x 4-pin Chassis Fan headers Power Related 1 x 24-pin Main Power connector 1 x 8-pin +12V CPU Power connector Storage Related 2 x M.2 slots (Key M) 4 x SATA 6Gb/s ports USB 1 x USB 5Gbps connector (supports USB Type-C® ) 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports 2 x USB 2.0 headers support 4 additional USB 2.0 ports Miscellaneous 2 x Addressable Gen2 headers 1 x Aura RGB header 1 x Clear CMOS header 1 x COM Port header 1 x Front Panel Audio header (F_AUDIO) 1 x S/PDIF Out header 1 x SPI TPM header (14-1 pin) 1 x 10-1 pin Front Panel System header |
| Special Features | ASUS 5X PROTECTION III - DIGI+ VRM (- Digital power design with DrMOS) - ESD Guards - LANGuard - Overvoltage protection - SafeSlot - Stainless-steel back I/O ASUS Q-Design - Q-Dashboard - Q-DIMM - Q-LED Core - Q-Slot ASUS Thermal Solution - M.2 heatsink - VRM heatsink design ASUS EZ DIY - ProCool - Pre-mounted I/O shield Aura Sync - Aura RGB header - Addressable Gen2 headers- DIGI+VRM - LANGuard - Overvoltage protection - SafeSlot Core+ - Stainless-steel back I/O ASUS Q-Design - Q-Dashboard - Q-DIMM - Q-LED Core - Q-Slot ASUS Thermal Solution - VRM heatsink design ASUS EZ DIY - ProCool Aura Sync - Aura RGB header - Addressable Gen2 headers |
| Software Features | ASUS Exclusive Software Armoury Crate - Aura Creator - Aura Sync - Fan Xpert 2+ - Power Saving ASUS DriverHub ASUS CPU-Z Norton 360 for Deluxe (60 Days Free Trial) WinRAR (40 Days Free Trial) UEFI BIOS ASUS EZ DIY - ASUS CrashFree BIOS 3 - ASUS EZ Flash - ASUS UEFI BIOS EZ Mode - ASUS MyHotkeyArmoury Crate - Aura Sync - Fan Xpert 2+ - Power Saving ASUS AI Advisor ASUS DriverHub ASUS CPU-Z Norton 360 Deluxe (60 Days Free Trial) WinRAR (40 Days Free Trial) UEFI BIOS ASUS EZ DIY - ASUS CrashFree BIOS 3 - ASUS EZ Flash - ASUS UEFI BIOS EZ Mode - ASUS MyHotkey |
| BIOS | 256 (128+128) Mb Flash ROM, UEFI AMI BIOS |
| Manageability | WOL by PME, PXE |
| Accessories | Cables 2 x SATA 6Gb/s cables Miscellaneous 1 x M.2 rubber package 1 x Screw package for M.2 SSD Documentation 1 x ACC Express Activation Key Card 1 x Quick start guide2 x SATA 6Gb/s cables Miscellaneous 1 x I/O Shield 1 x M.2 anchor package Documentation 1 x Quick start guide 1 x ACC Express activation key card |
| Operating System | Windows 11 (22H2 & later), Windows 10 64-bit(21H2 & later) |
| Form Factor | micro-ATX Form Factor 9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)9.6 inch x 8.75 inch (24.4cm x 22.2cm) |
Datasheet
| Form Factor | mATX |
|---|---|
| Chipset | Intel® B860 Chipset |
| CPU Type | |
| USB | Rear USB (Total 8 ports)1 x USB 20Gbps port (1 x USB Type-C®)1 x USB 10Gbps port (1 x Type-A )2 x USB 5Gbps ports (2 x Type-A)4 x USB 2.0 ports (4 x Type-A)**Front USB (Total 5 ports)1 x USB 10Gbps connector (supports USB Type-C® )1 x USB 5Gbps header supports 2 additional USB 5Gbps ports1 x 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.1 x USB 10Gbps port (1 x Type-A)2 x USB 5Gbps ports (2 x Type-A)3 x USB 2.0 ports (3 x Type-A)**Front USB (Total 7 ports)1 x USB 5Gbps connector (supports USB Type-C®)1 x USB 5Gbps header supports 2 additional USB 5Gbps ports2 x USB 2.0 headers support 4 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 |
| Bios | 256 (128+128) Mb Flash ROM, UEFI AMI BIOS |
| Audio | Realtek 7.1 Surround Sound High Definition Audio CODEC*- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking- Supports up to 24-Bit/192 kHz playbackAudio Features- Audio Shielding- Premium audio capacitors- Dedicated audio PCB layers* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking- Supports up to 24-Bit/192 kHz playbackAudio Features- Audio Shielding- Premium audio capacitors- Dedicated audio PCB layers* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output |
| Model | PRIME B860M-A-CSM |
| Memory | 4 x DIMM slots, max. 256GB, DDR5Supports up to 8666+MT/s (OC), Non-ECC,Un-buffered ,Clocked Unbuffered DIMM (CUDIMM)*Dual channel memory architectureDIMM FitSupports Intel® Extreme Memory Profile (XMP) memory moduleASUS 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 CPU/Memory Support list under the Support tab of product information site or visit https://www.asus.com/support/download-center/.* 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 |
| Storage | Total supports 2 x M.2 slots and 4 x 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 ChipsetM.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 modes)4 x SATA 6Gb/s ports* Intel® Rapid Storage Technology supports SATA RAID 0/1/5/10.Intel® Core™ Ultra Processors (Series 2) *M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)Intel® B860 ChipsetM.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)4 x SATA 6Gb/s ports* Intel® Rapid Storage Technology supports SATA RAID 0/1/5/10 |
| Ethernet | 1 x Realtek 2.5Gb EthernetASUS LANGuardASUS LANGuard |
| Graphics | 2 x DisplayPort**1 x HDMI™ port**** Graphics specifications may vary between CPU types. Please refer to http://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.1 x HDMI™ port*** * Graphics specifications may vary between CPU types. Please refer to http://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 |
| Accessories | Cables2 x SATA 6Gb/s cablesMiscellaneous1 x M.2 rubber package1 x Screw package for M.2 SSDDocumentation1 x ACC Express Activation Key Card1 x Quick start guide2 x SATA 6Gb/s cablesMiscellaneous1 x I/O Shield1 x M.2 anchor packageDocumentation1 x Quick start guide1 x ACC Express activation key card |
| Manageability | WOL by PME, PXE |
| Expansion Slots | Intel® Core™ Ultra Processors(series 2)*1 x PCIe 5.0 x16 slotIntel® 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 https://www.asus.com/support/download-center/ for the list of supported peripherals.1 x PCIe 4.0 x16 slotIntel® B860 Chipset2 x PCIe 4.0 x1 slots- To ensure compatibility of the device installed, please refer to https://www.asus.com/support/download-center/ for the list of supported peripherals |
| Operating System | Windows 11 (22H2 & later), Windows 10 64-bit(21H2 & later) |
| Special Features | ASUS 5X PROTECTION III- DIGI+ VRM (- Digital power design with DrMOS)- ESD Guards- LANGuard- Overvoltage protection- SafeSlot- Stainless-steel back I/OASUS Q-Design- Q-Dashboard- Q-DIMM- Q-LED Core- Q-SlotASUS Thermal Solution- M.2 heatsink- VRM heatsink designASUS EZ DIY- ProCool- Pre-mounted I/O shieldAura Sync- Aura RGB header- Addressable Gen2 headers- DIGI+VRM- LANGuard- Overvoltage protection- SafeSlot Core+- Stainless-steel back I/OASUS Q-Design- Q-Dashboard- Q-DIMM- Q-LED Core- Q-SlotASUS Thermal Solution- VRM heatsink designASUS EZ DIY- ProCoolAura Sync- Aura RGB header- Addressable Gen2 headers |
| Software Features | ASUS Exclusive SoftwareArmoury Crate- Aura Creator- Aura Sync- Fan Xpert 2+- Power SavingASUS DriverHubASUS CPU-ZNorton 360 for Deluxe (60 Days Free Trial)WinRAR (40 Days Free Trial)UEFI BIOSASUS EZ DIY- ASUS CrashFree BIOS 3- ASUS EZ Flash- ASUS UEFI BIOS EZ Mode- ASUS MyHotkeyArmoury Crate- Aura Sync- Fan Xpert 2+- Power SavingASUS AI AdvisorASUS DriverHubASUS CPU-ZNorton 360 Deluxe (60 Days Free Trial)WinRAR (40 Days Free Trial)UEFI BIOSASUS EZ DIY- ASUS CrashFree BIOS 3- ASUS EZ Flash- ASUS UEFI BIOS EZ Mode- ASUS MyHotkey |
| Back Panel I/O Ports | 1 x USB 20Gbps port (1 x USB Type-C®)1 x USB 10Gbps port (1 x Type-A)2 x USB 5Gbps ports (2 x Type-A)4 x USB 2.0 ports (4 x Type-A )2 x DisplayPort1 x HDMI™ port1 x Realtek 2.5Gb Ethernet port3 x Audio jacks2 x USB 5Gbps ports (2 x Type-A)3 x USB 2.0 ports (3 x Type-A)1 x DisplayPort1 x HDMITM port1 x Realtek 2.5Gb Ethernet port3 x Audio jacks1 x PS/2 Keyboard/Mouse combo port |
| Internal I/O Connectors | Fan and Cooling Related1 x 4-pin CPU Fan header1 x 4-pin CPU OPT Fan header1 x 4-pin AIO Pump header3 x 4-pin Chassis Fan headersPower Related1 x 24-pin Main Power connector1 x 8-pin +12V CPU Power connectorStorage Related2 x M.2 slots (Key M)4 x SATA 6Gb/s portsUSB1 x USB 10Gbps connector (supports USB Type-C® )1 x USB 5Gbps header supports 2 additional USB 5Gbps ports1 x USB 2.0 header supports 2 additionalUSB 2.0 portsMiscellaneous3 x Addressable Gen 2 headers1 x Aura RGB header1 x Clear CMOS header1 x Chassis Intrusion header1 x COM Port header1 x Front Panel Audio header (F_AUDIO)1 x S/PDIF Out header1 x SPI TPM header (14-1 pin)1 x 10-1 pin Front System Panel header1 x Thunderbolt™ (USB4®) header1 x 4-pin CPU Fan header2 x 4-pin Chassis Fan headersPower Related1 x 24-pin Main Power connector1 x 8-pin +12V CPU Power connectorStorage Related2 x M.2 slots (Key M)4 x SATA 6Gb/s portsUSB1 x USB 5Gbps connector (supports USB Type-C® )1 x USB 5Gbps header supports 2 additional USB 5Gbps ports2 x USB 2.0 headers support 4 additional USB 2.0 portsMiscellaneous2 x Addressable Gen2 headers1 x Aura RGB header1 x Clear CMOS header1 x COM Port header1 x Front Panel Audio header (F_AUDIO)1 x S/PDIF Out header1 x SPI TPM header (14-1 pin)1 x 10-1 pin Front Panel System header |




