BIOS - BIOS memory size - 256 Mbit
BIOS - BIOS type - UEFI AMI
Brand - ASUS
BrandPartCode - 90MB1LQ0-M0EAYC
Category - Motherboards
Category 1 - Mainboards & Zubehör
Category 2 - Mainboards - Intel
EAN - 4711636054706
Expansion slots - 1st M.2 highest PCI Express generation - 5.0
Expansion slots - 1st M.2 largest key size - 2280
Expansion slots - 2nd M.2 highest PCI Express generation - 4.0
Expansion slots - 2nd M.2 largest key size - 2280
Expansion slots - 3rd M.2 highest PCI Express generation - 4.0
Expansion slots - 3rd M.2 largest key size - 2280
Expansion slots - 4th M.2 highest PCI Express generation - 4.0
Expansion slots - 4th M.2 largest key size - 2280
Expansion slots - Number of M.2 (M) slots - 3
Expansion slots - PCI Express x16 (Gen 4.x) slots - 2
Expansion slots - PCI Express x16 (Gen 5.x) slots - 1
Features - Audio output channels - 7.1 channels
Features - Component for - PC
Features - Cooling type - Passive
Features - Motherboard chipset - AMD B850
Features - Motherboard chipset family - AMD
Features - Motherboard form factor - micro ATX
Features - Power source type - ATX
Features - Product colour - Grey
Features - Windows operating systems supported - Windows 10 x64, Windows 11
Graphics - Maximum resolution - 7680 x 4320 pixels
Graphics - Parallel processing technology support - Not supported
GTIN - 4711636054706
Internal I/O - 12V power connector - Yes
Internal I/O - ATX Power connector (24-pin) - Yes
Internal I/O - Chassis intrusion connector - Yes
Internal I/O - CPU fan connector - Yes
Internal I/O - EPS power connector (8-pin) - Yes
Internal I/O - Front panel audio connector - Yes
Internal I/O - Front panel connector - Yes
Internal I/O - Number of chassis fan connectors - 3
Internal I/O - Number of COM connectors - 1
Internal I/O - Number of CPU fan connectors - 1
Internal I/O - Number of EPS power connectors (8-pin) - 1
Internal I/O - Number of RGB LED pin headers - 3
Internal I/O - Number of SATA III connectors - 4
Internal I/O - Peripheral (Molex) power connectors (4-pin) - 1
Internal I/O - RGB LED pin header - Yes
Internal I/O - S/PDIF out connector - Yes
Internal I/O - TPM connector - Yes
Internal I/O - USB 2.0 connectors - 2
Internal I/O - USB 3.2 Gen 1 (3.1 Gen 1) connectors - 2
LongDesc - ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B850M-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 ModelASUS Corporate Stable Model (CSM) is a commercial program designed to provide stable and reliable motherboards. Offering up to 36-month product lifecycle support and 6-month end-of-life notice to allow sufficient lead times for your organization to get ready for product transitions. Each purchase of an ASUS CSM motherboard comes with ASUS Control Center Express - server-grade IT management software.ASUS Control Center ExpressASUS Control Center Express is an integrated IT monitoring and management software designed to deploy faster, simplify IT operations and improve productivity with comprehensive control and user-friendly functions. ASUS Control Center Express is compatible with over 100 ASUS motherboards to provide a high-quality, TCO-optimized solution for your business needs.Optimize IT endpoint managementDesigned to assist IT staff in monitoring and controlling devices within their corporate networks, and facilitate inventory checking in multiple locations remotely.Automate IT maintenanceAllows IT staff to schedule automatic updates of the latest BIOS, software and utilities to specific or all devices at off-peak times, enhancing system stability and IT operational flexibility.Securely manage all of endpointsSecurely manage endpoint configuration, portable storage access and PC software applications by enabling them to create grouping rules on individual devices.PerformanceAI SolutionsASUS AI Solutions include AI Advisor as your technical expert with expertise in PC performance.AI AdvisorASUS AI Advisor allows users to explore the functionality and advanced features of ASUS motherboards in a simple and straightforward way.PerformanceDigital Power DesignPRIME B850M-A-CSM features an 8+2+1 phase power design with discrete MOSFETs, ensuring efficient and stable power delivery for AMD processors plus steady performance for day-to-day use.The multi-layered printed circuit board design quickly dissipates heat around the voltage regulators to improve overall system stability and provide the CPU with more overclocking headroom.The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings.Enhanced Memory & Storage PerformanceEnhanced DDR5 performanceComprehensive memory tuning options are the cornerstone of PRIME motherboards. The PRIME B850M-A-CSM maximizes the potential of your DDR5 modules, from entry-level to extreme-speed kits.2For entry-level modules without EXPO™ support, ASUS Enhanced Memory Profile (AEMP) automatically detects memory chips and provides optimized profiles for enhanced performance.For those looking to surpass stock DDR5 speeds, the PRIME B850M-A-CSM offers extensive AMD Extended Profiles for Overclocking (EXPO™) support and a wide array of UEFI settings for further performance tweaks.Three M.2 slots (up to 128 Gbps)PRIME B850M-A-CSM offers a total of three M.2 slots, including one that supports data-transfer speeds of up to 128 Gbps via PCIe 5.0, and two that support PCIe 4.0. This enables quicker boot-up and app load times with OS or application drives.CoolingCooler by designThe PRIME B850M-A-CSM motherboard is engineered with multiple onboard heatsinks and an array of hybrid fan headers to help ensure your rig stays cool and stable under intense workloads.Smart Cooling precisionASUS Fan Xpert 2+ASUS Fan Xpert 2+ software provides comprehensive control over fans. An Auto-Tuning mode intelligently configures all parameters with a single click. There’s also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS.Cooler compatibilityASUS AIO coolers offer robust performance, high overclocking potential, bold aesthetics and customizable functionality for new motherboards, empowering you to build your dream gaming rig.FlexibilityEmpowering connectionsThis motherboard offers a versatile range of connectivity, including support for PCIe 5.0 slot and an arsenal of USB ports which includes Type-C® connections.Realtek 2.5 Gb EthernetRealtek 2.5 Gb Ethernet reduces CPU overhead and offers exceptionally high TCP and UDP throughput for faster, smoother data transfers.Front USB 5Gbps Type-C®This motherboard features a USB 5Gbps Type-C® front panel connector for speedy data transfers of up to 5Gbps.CustomizationPersonalizationThe PRIME B850M-A-CSM enhances the user experience across the board, from simplifying BIOS setting adjustments to offering customizable RGB lighting controls for a uniquely personal system aesthetic.UEFI BIOSThe UEFI interface delivers easy-to-use configuration options for PC beginners, and advanced features for veterans.ASUS DriverHubSimplify driver management with automatic detection, one-click installation and update for smooth, efficient system performance.Armoury CrateCustomize Aura Sync RGB and control ASUS devices. Includes product registration and updates.Aura SyncComplete RGB lighting control for enthusiast systems, ensuring seamless synchronization with compatible hardware.Addressable Gen 2 RGB headersThree addressable Gen 2 headers detect LED counts on compatible RGB devices, automatically adjusting lighting effects accordingly.CustomizationDIY friendlyThe PRIME B850M-A-CSM motherboard features EZ PC DIY innovations that simplify and speed up the PC building process, making DIY easy and convenient.Pre-mounted I/O shieldOur pre-installed I/O shield safeguards ports, simplifies the build process, increases functionality and enhances aesthetics for PC DIY enthusiasts.BIOS FlashBack™BIOS FlashBack™ simplifies BIOS updates. Just load the BIOS file onto a FAT32 USB stick, insert it into the BIOS FlashBack™ port, and press a button—no CPU or memory needed.SafeSlotPCIe 5.0 is twice as fast as PCIe 4.0. ASUS has adapted our SMT manufacturing for the faster SafeSlot, a reinforced metal sheath that ensures secure card installation and faster data speeds.Q-LED CoreThe Q-LED Core display produces color-coded lights during the Power-On Self-Test (POST) that can help you troubleshoot potential issues.Build for the most advanced pc for gaming and creatingWhen only the fastest will do, ASUS motherboards deliver. With faster dual-channel DDR5 memory support, AMD EXPO™ technology and PCIe® 5.0 support for both graphics and NVMe, you can play the most demanding games and deliver your biggest projects with the revolutionary performance of an ASUS motherboard and AMD Ryzen™ 9000, 8000, and 7000 Series processors.
LongProductName - PRIME B850M-A-CSM motherboard socket AMD AM5 (microATX, DDR5, PCIe 5.0, 3x M.2 slots, Realtek 2.5Gb Ethernet, DisplayPort, HDMI, BIOS FlashBack, Aura Sync, ASUS Control Center Express)
LongSummaryDescription - ASUS PRIME B850M-A-CSM. Processor manufacturer: AMD, Processor socket: Socket AM5, Compatible processor series: AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series. Supported memory types: DDR5-SDRAM, Maximum internal memory: 256 GB, Memory slots type: DIMM. Supported storage drive interfaces: PCI Express 4.0, PCI Express 5.0, Supported storage drive types: HDD & SSD, RAID levels: 0, 1, 5, 10. Maximum resolution: 7680 x 4320 pixels. Ethernet interface type: 2.5 Gigabit Ethernet
Manufacturer - ASUS
Memory - ECC сompatibility - ECC & Non-ECC
Memory - Maximum internal memory - 256 GB
Memory - Maximum internal memory per slot - 64 GB
Memory - Memory channels - Dual-channel
Memory - Memory slots type - DIMM
Memory - Number of memory slots - 4
Memory - Supported memory clock speed (max) - 8000 MHz
Memory - Supported memory types - DDR5-SDRAM
Memory - Unbuffered memory - Yes
MPN - 90MB1LQ0-M0EAYC
Name - MB ASUS PRIME B850M-A-CSM
Network - Ethernet interface type - 2.5 Gigabit Ethernet
Network - Ethernet LAN - Yes
Network - Wi-Fi - No
Packaging content - Cables included - SATA
Packaging content - Screws included - Yes
Packaging data - Package depth - 275 mm
Packaging data - Package height - 67.5 mm
Packaging data - Package weight - 1.45 kg
Packaging data - Package width - 275 mm
Processor - Compatible processor series - AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Processor - Processor manufacturer - AMD
Processor - Processor socket - Socket AM5
Processor - Supported processor sockets - Socket AM5
ProductName - PRIME B850M-A-CSM
Rear panel I/O ports - DisplayPorts quantity - 2
Rear panel I/O ports - DisplayPort version - 1.4
Rear panel I/O ports - Ethernet LAN (RJ-45) ports - 1
Rear panel I/O ports - HDMI ports quantity - 1
Rear panel I/O ports - HDMI version - 2.1
Rear panel I/O ports - Headphone outputs - 1
Rear panel I/O ports - Line-in - Yes
Rear panel I/O ports - Microphone in - Yes
Rear panel I/O ports - USB 2.0 ports quantity - 4
Rear panel I/O ports - USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity - 2
Rear panel I/O ports - USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity - 2
ShortSummaryDescription - ASUS PRIME B850M-A-CSM, AMD, Socket AM5, AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series, Socket AM5, DDR5-SDRAM, 256 GB
Storage controllers - Number of HDDs supported - 4
Storage controllers - Number of storage drives supported - 7
Storage controllers - RAID levels - 0, 1, 5, 10
Storage controllers - RAID support - Yes
Storage controllers - Supported storage drive interfaces - PCI Express 4.0, PCI Express 5.0
Storage controllers - Supported storage drive types - HDD & SSD
Title - ASUS PRIME B850M-A-CSM AMD B850 Socket AM5 micro ATX
URL - https://www.asus.com/motherboards-components/motherboards/csm/prime-b850m-a-csm/
WarrantyInfo -
Weight & dimensions - Depth - 244 mm
Weight & dimensions - Width - 244 mm
