Asus Motherboard Prime B840M-A-CSM

Specifications:

• Product Number: 90MB1J10-M0EAYC
• Model: PRIME B840M-A-CSM
• CPU: AMD Socket AM5 for AMD Ryzen™ 9000 & 8000 & 7000 Series Desktop Processors
• Chipset: AMD B840 Chipset

Memory:

• 4 x DIMM slots, max. 256GB, DDR5
• Supports up to 7600+MT/s (OC) with Ryzen™ 9000 & 8000 & 7000 Series Processors, ECC and Non-ECC, Un-buffered DIMM
• Dual channel memory architecture
• Supports AMD Extended Profiles for Overclocking (EXPO™)
• ASUS Enhanced Memory Profile (AEMP)
• 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 AMD CPU specifications.
• Supports max. 8K@30Hz as specified in DisplayPort 1.4.
• Supports 4K@60Hz as specified in HDMI 2.1.
  

Expansion Slots:

• AMD Ryzen™ 9000 & 7000 Series Desktop Processors*
  1 x PCIe 4.0 x16 slot (supports x16 mode)
  
• AMD Ryzen™ 8000 Series Desktop Processors
  1 x PCIe 4.0 x16 slot (supports x8/x4 mode)**
  
• AMD B840 Chipset
  2 x PCIe 3.0 x16 slots (support x1 mode)
  

Storage:

• Total supports 3 x M.2 slots and 4 x SATA 6Gb/s ports
  
• AMD Ryzen™ 9000 & 7000 Series Desktop Processors
  • M.2_1 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
  • M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
    
• AMD Ryzen™  8000 Series Desktop Processors
  
  • M.2_1 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
    
  • M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4/x2 mode)*
    
• AMD B840 Chipset
  • M.2_3 slot (Key M), type 2280 (supports PCIe 3.0 x4 mode)
  • 4 x SATA 6Gb/s ports
• AMD RAIDXpert2 Technology
• Ryzen™ 9000 Series Processors: RAID 0/1/5/10
• Ryzen™ 8000 Series Processors: RAID 0/1
• Ryzen™ 7000 Series Processors: RAID 0/1/10

Ethernet:

• 1 x Realtek 2.5Gb Ethernet
• ASUS LANGuard

USB:

• Rear USB (Total 7 ports)
  
  • 2 x USB 10Gbps ports (2 x Type-A)
    
  • 1 x USB 5Gbps port (1 x USB Type-C®)
    
  • 4 x USB 2.0 ports (4 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

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

Back Panel I/O Ports:

• 2 x USB 10Gbps ports (2 x Type-A)
  
• 1 x USB 5Gbps port (1 x USB Type-C®)
  
• 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 jacks
  
• 1 x BIOS FlashBack™ button
  

Internal I/O Connectors:

• Fan and Cooling Related: 
  
  • 1 x 4-pin CPU Fan header
    
  • 1 x 4-pin CPU OPT 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
  
  • 3 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
  
  • 3 x Addressable Gen 2 headers
    
  • 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
    
  • 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
  
  •  M.2 heatsink
    
  • VRM heatsink design
• ASUS EZ DIY
  
  • BIOS FlashBack™ button
    
  • BIOS FlashBack™ LED
    
  • Pre-mounted I/O shield
    
• Aura Sync
  • Addressable Gen 2 headers
    

Software Features:

• ASUS Exclusive Software
  
• Armoury Crate
  • Aura Creator
  • Aura Sync
  • Fan Xpert 2+
  • Power Saving
• ASUS DriverHub
• TurboV Core
• 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 3
    
  • ASUS UEFI BIOS EZ Mode
    
  • ASUS MyHotkey
    

Other:

• Remote Management Features:
  • IT Management software supported
  • ASUS Control Center Express (ACCE)
• BIOS: 256 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
    
  • 2 x Screw packages for M.2 SSD
    
• Documentation
  
  • 1 x ACC Express Activation Key Card
    
  • 1 x Quick start guide
    

Operating System

• Windows 11, Windows 10 64-bit
  

Form Factor:

• micro-ATX Form Factor
  
• 9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)