• Model: AMD B840

CPU

• Supported Processors:
  • AMD Ryzen™ 9000 / 8000 / 7000 Series Desktop Processors
   
• Socket: AM5

Memory

• Slots: 4x DDR5 UDIMM slots
• Maximum Capacity: 256GB
• Supported Memory Speeds:
  • Overclocked (OC): 8000 - 5600 MT/s
  • JEDEC Standard: 5600 - 4800 MT/s
   
• Max. Overclocking Frequencies (Ryzen™ 9000 Series):
  • 1DPC 1R: Up to 8000+ MT/s
  • 1DPC 2R: Up to 6400+ MT/s
  • 2DPC 1R: Up to 6400+ MT/s
  • 2DPC 2R: Up to 4800+ MT/s
   
• Memory Features:
  • Dual-Channel Mode
  • Non-ECC, Un-buffered Memory
  • Supports CUDIMM (Clock Driver bypass mode only)
  • Supports AMD POR Speed and JEDEC Speed
  • Supports Memory Overclocking and AMD EXPO™
   
• Note: CUDIMM support and POR boot frequency may vary by CPU series. Manual overclocking is available after boot. Certain CPUs may fail to boot, but future BIOS updates will improve compatibility.

Onboard Graphics

• Ports:
  • 1x HDMI™ (Supports HDMI™ 2.1, max resolution of 4K @ 60Hz )
   
• Note: Available only on processors featuring integrated graphics. Graphics specifications may vary depending on the installed CPU.

Expansion Slots

• PCIe Configuration:
  • PCI_E1: PCIe 4.0 x16 slot (From CPU)
    • Supports PCIe 4.0 x16 (For Ryzen™ 9000/7000 Series processors)
    • Supports PCIe 4.0 x8 (For Ryzen™ 8700/8600/8400 Series processors)
    • Supports PCIe 4.0 x4 (For Ryzen™ 8500/8300 Series processors)
     
  • PCI_E2: PCIe 3.0 x1 slot (From Chipset)
  • PCI_E3: PCIe 3.0 x1 slot (From Chipset)
  • PCI_E4: PCIe 3.0 x4 slot (From Chipset)
  • PCI_E5: PCIe 3.0 x1 slot (From Chipset)

Audio

• Codec: Realtek® ALC897
• Features:
  • 7.1-Channel High-Definition Audio

Storage

• M.2 Slots:
  • M.2_1: PCIe 4.0 x4 (From CPU), supports 2280/2260 devices
  • M.2_2:
    • Supports up to PCIe 4.0 x4 (For Ryzen™ 9000/7000 Series processors)
    • Supports up to PCIe 3.0 x4 (For Ryzen™ 8700/8600/8400 Series processors)
    • Supports up to PCIe 3.0 x2 (For Ryzen™ 8500/8300 Series processors)
    • Supports 22110/2280/2260 devices
   
• SATA Ports: 4x SATA 6Gb/s ports
• RAID Support: RAID 0 and RAID 1 for M.2 NVMe storage devices
• Note: Refer to the manual for M.2 SSD heatsink restrictions.

USB

• Rear Ports:
  • 4x USB 2.0 Type-A
  • 2x USB 5Gbps Type-A
  • 1x USB 10Gbps Type-A
  • 1x USB 10Gbps Type-C
   
• Front Ports:
  • 4x USB 2.0
  • 2x USB 5Gbps Type-A
  • 1x USB 5Gbps Type-C

LAN

• Controller: Realtek® 8125BG 2.5G LAN

Wireless & Bluetooth

• Wireless Module: Wi-Fi 7 Solution (Pre-installed in M.2 Key-E slot)
• Features:
  • Supports MU-MIMO TX/RX
  • Frequency Bands: 2.4GHz, 5GHz, 6GHz (320MHz)
  • Maximum Speed: Up to 5.8Gbps
  • Wi-Fi Standards: 802.11 a/b/g/n/ac/ax/be
   
• Bluetooth:
  • Version: Bluetooth® 5.4 (supports MLO, 4KQAM)
  • Note: 6GHz band support depends on regional regulations. Wi-Fi 7 and Bluetooth 5.4 require Windows 11 version 24H2.

Back Panel Ports

• Connectivity:
  • Clear CMOS Button
  • USB 10Gbps (Type-A)
  • USB 2.0 Type-A
  • 2.5G LAN Port
  • Wi-Fi / Bluetooth Antenna Connector
  • Audio Connectors
  • Flash BIOS Button
  • HDMI™ 2.1 Port
  • USB 10Gbps (Type-C)
  • USB 5Gbps (Type-A)

Internal I/O Connectors

• Fan Headers:
  • 1x CPU Fan
  • 1x Combo Fan (Pump_Sys Fan)
  • 4x System Fans
   
• Power Connectors:
  • 1x ATX Power Connector (24-pin)
  • 1x CPU Power Connector (8-pin)
   
• Other Headers:
  • 2x Front Panel Connectors (JFP)
  • 1x Chassis Intrusion Header (JCI)
  • 1x Front Audio Header (JAUD)
  • 1x COM Port Header (JCOM)
  • 1x Tuning Controller Connector (JDASH)
  • 2x Addressable V2 RGB LED Connectors (JARGB_V2)
  • 1x RGB LED Connector (JRGB)
  • 1x TPM Pin Header (Supports TPM 2.0)
  • 4x USB 2.0 Ports
  • 2x USB 5Gbps Type-A Ports
  • 1x USB 5Gbps Type-C Port

LED Features

• EZ Debug LEDs: 4x EZ Debug LEDs

Operating System

• Supported OS: Windows® 11 64-bit

Form Factor

• Size: ATX Form Factor
• Dimensions: 12" x 9.6" (30.5 cm x 24.4 cm)