ASUS PRIMEB840M-AWIFI-CSM ASUS PRIME B840M-A WIFI-CSM motherboard AMD B840 Socket AM5 micro ATX

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PRIMEB840M-AWIFI-CSM
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ASUS Prime series motherboards are expertly engineered to unleash the full potential of AMD Ryzen™ 9000 series processors. The PRIME B840M-A WIFI-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.8PerformanceDigital Power DesignPRIME B840M-A WIFI-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.6The 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 Power Saving function contains several settings to easily optimize power consumption and maximize energy savings. You can enable a CPU power limit, darken Aura lighting and set the fan profile to a Power Saving mode. You can also toggle the Power Saver plan that is built into Microsoft Windows.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 B840M-A WIFI-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 B840M-A WIFI-CSM offers extensive AMD Extended Profiles for Overclocking (EXPO™) support and a wide array of UEFI settings for further performance tweaks.3Three M.2 slots (up to 64 Gbps)PRIME B840M-A WIFI-CSM offers a total of three M.2 slots, including two that support data-transfer speeds of up to 64 Gbps via PCIe 4.0, and one that supports PCIe 3.0. This enables quicker boot-up and app load times with OS or application drives.4CoolingCooler by designThe PRIME B840M-A WIFI-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.6Cooler 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.6FlexibilityEmpowering connectionsThis motherboard offers a versatile range of connectivity, including support for WiFi 6E, PCIe 4.0 slot and an arsenal of USB ports which includes Type-C® connections.WiFi 6EBuilt-in WiFi 6E5 technology takes advantage of the newly available radio spectrum in the 6 GHz band. With triple the bandwidth of the 2.4/5/6 GHz band, WiFi 6E delivers ultrafast wireless networking speeds with improved capacity and better performance in dense wireless environments.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.6CustomizationPersonalizationThe PRIME B840M-A WIFI-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 GlideXEnable seamless screen sharing and control across PCs, tablets, and smartphones via wired or wireless connections, supporting multiple platforms.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 B840M-A WIFI-CSM motherboard features EZ PC DIY innovations that simplify and speed up the PC building process, making DIY easy and convenient.Q-AntennaWith Q-Antenna, attaching a WiFi antenna to your PC is now easy and fast. Instead of slowly rotating two fasteners until they finally lock in, they just snap into place. Less hassle, and more consistent performance.7Q-LED CoreThe Q-LED Core display produces color-coded lights during the Power-On Self-Test (POST) that can help you troubleshoot potential issues.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.SafeSlot Core+SafeSlot Core+ is a one-piece stainless-steel brace that shields the slot to protect it from damage. The metal cover is tightly secured to the slot with hooks, and the entire assembly is firmly anchored to the PCB with strengthened solder points to provide a secure foundation for heavyweight graphics cards.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® 4.0 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.

Internal I/O
Number of M.2 (M) slots3
USB 3.2 Gen 2 (3.1 Gen 2) connectors0
Front panel connectorYes
Supported storage drive interfacesM.2, SATA III
USB 2.0 connectors2
USB 3.2 Gen 1 (3.1 Gen 1) connectors2
mSATA ports quantity0
TPM connectorYes
S/PDIF out connectorYes
Number of SATA connectors0
Number of SATA III connectors4
Number of SATA II connectors0
Number of COM connectors1
Number of chassis fan connectors3
Front panel audio connectorYes
EPS power connector (8-pin)Yes
CPU fan connectorYes
ATX Power connector (24-pin)Yes
RGB LED pin headerYes
Number of CPU fan connectors2
Number of EPS power connectors (8-pin)1
Number of water pump connectors1
Number of RGB LED pin headers3
Technical details
Motherboard chipset familyAMD
Motherboard chipsetAMD B840
Supported processor socketsSocket AM5
Parallel processing technology supportNot supported
On-board graphics cardNo
HDMI version2.1
Motherboard form factormicro ATX
Component forPC
Audio
Audio output channels7.1 channels
Performance
Number of HDDs supported4
Supported storage drive typesHDD & SSD
Motherboard chipset familyAMD
Motherboard chipsetAMD B840
RAID levels0, 1, 5, 10
Windows operating systems supportedWindows 10 x64, Windows 11
Supported processor socketsSocket AM5
Audio output channels7.1 channels
Motherboard form factormicro ATX
Component forPC
Processor
Processor manufacturerAMD
Compatible processor seriesAMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported processor socketsSocket AM5
Processor socketSocket AM5
Memory
Number of memory slots4
Memory slots typeDIMM
Supported memory typesDDR5-SDRAM
Memory channelsDual-channel
Maximum internal memory192 GB
Unbuffered memoryYes
Supported memory clock speed (max)7600 MHz
ECC сompatibilityECC & Non-ECC
Storage controllers
Number of HDDs supported4
Supported storage drive typesHDD & SSD
Supported storage drive interfacesM.2, SATA III
RAID levels0, 1, 5, 10
Number of storage drives supported7
RAID supportYes
Graphics
Parallel processing technology supportNot supported
On-board graphics cardNo
Maximum resolution7680 x 4320 pixels
Rear panel I/O ports
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity0
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity1
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity2
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity0
DisplayPort version1.4
USB 2.0 ports quantity4
WiFi-AP antenna jack2
VGA (D-Sub) ports quantity0
Headphone outputs1
HDMI version2.1
HDMI ports quantity1
Ethernet LAN (RJ-45) ports1
DVI-D ports quantity0
DisplayPorts quantity2
Line-inYes
Network
Ethernet LANYes
Wi-FiYes
Wi-Fi standardsWi-Fi 6E (802.11ax)
Ethernet interface type2.5 Gigabit Ethernet
BluetoothYes
Bluetooth version5.3
Top Wi-Fi standardWi-Fi 6E (802.11ax)
Features
Power source typeATX
Motherboard chipset familyAMD
Motherboard chipsetAMD B840
Windows operating systems supportedWindows 10 x64, Windows 11
Supported processor socketsSocket AM5
Audio output channels7.1 channels
Motherboard form factormicro ATX
Component forPC
Product colourBlack
Expansion slots
Number of M.2 (M) slots3
PCI Express x16 (Gen 3.x) slots2
PCI Express x16 (Gen 4.x) slots1
1st M.2 largest key size2280
1st M.2 highest PCI Express generation4.0
2nd M.2 largest key size2280
2nd M.2 highest PCI Express generation4.0
3rd M.2 largest key size2280
3rd M.2 highest PCI Express generation3.0
BIOS
BIOS typeUEFI AMI
BIOS memory size256 Mbit
Power
Power source typeATX
Video
Maximum resolution7680 x 4320 pixels
Software
Windows operating systems supportedWindows 10 x64, Windows 11
Weight & dimensions
Width9.61" (244 mm)
Depth9.61" (244 mm)
Packaging content
Quick installation guideYes
Cables includedSATA
Screws includedYes
Antenna includedYes
Other features
mSATA ports quantity0
Quick installation guideYes

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ASUS PRIMEB840M-AWIFI-CSM ASUS PRIME B840M-A WIFI-CSM motherboard AMD B840 Socket AM5 micro ATX

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