Description:
General Information
Manufacturer: MSI
Manufacturer Part Number: PROB840MB
Brand Name: MSI
Product Series: PRO
Product Model: B840M-B
Product Name: PRO B840M-B Gaming Desktop Motherboard
Marketing Information:
PRO B840M-B
PRO B840M-B is engineered with many exclusive features of MSI, PCIe 4.0 M.2, EZ PCIe Clip II, 2.5G LAN, and Front Type-C, ready for the AMD Ryzen 9000 series processors.
PRO BUSINESS ELEGANCE
The PRO Series is tailored to professionals from all walks of life. The lineup features impressive performance and high quality, while aiming to provide users incredible experience. Users who care about productivity and efficiency can definitely count on the MSI PRO Series to assist you with multitasking and increasing efficiency.
READY FOR AI PC
MSI motherboards are designed with advanced hardware and technology, well-supporting the demanding computing usage of gaming and AI. Moreover, we also introduce AI to MSI Center and BIOS, making everything more effortless than before.
AI Engine
provides several categories for you to sync the applications you want to perform and automatically optimizing them to create a comfortable environment.
AI LAN MANAGER
optimizes networking performance and minimizes latency, providing a seamless online experience.
Frozr AI Cooling
automatically adjusts fan duty to make sure the system stays in cool, stable and high performance.
AI Boost
is an MSI exclusive feature. It overclocks NPU to improve higher AI performance.
Product Type: Gaming Desktop Motherboard
Technical Information
AI-powered: Yes
Processor & Chipset
Chipset Manufacturer: AMD
Chipset Model: B840
Total Processor Supported: 1
Processor Socket: Socket AM5
Processor Supported: Ryzen 7Ryzen 9Memory
Number of Memory Slots: 2
Memory Form Factor: DIMMUDIMMMaximum Memory Supported: 128 GB
Memory Speed Supported: 8000 MHz7200 MHz5600 MHz4800 MHzMemory Technology: DDR5 SDRAM
I/O Controller
Controller Type: Serial ATA/600
RAID Supported: Yes
RAID Levels: 0110Video
Onboard Video: CPU Dependent Video
Audio
Audio Channels: 7.1
Network & Communication
Gigabit Ethernet: Yes
2.5Gigabit Ethernet: Yes
I/O Expansions
Total Number of Expansion Slots: 2
Total Number of PCI Express Slots: 2
Number of PCI Express x1 Slots: 1
Number of PCI Express x16 Slots: 1
PCI Express Standard: PCI Express 3.0PCI Express 4.0Interfaces/Ports
Total Number of USB Ports: 6
Number of USB 2.0 Ports: 2
VGA: Yes
HDMI: Yes
Number of Network (RJ-45) Ports: 1
Onboard Interfaces
Number of SATA Interfaces: 4
Number of M.2 Interfaces: 2
Total Number of Onboard USB Ports: 7
Number of Onboard USB 2.0 Ports: 4
Physical Characteristics
Form Factor: Micro ATX
Height: 2.60" (66.04 mm)
Width: 9.60" (243.84 mm)
Depth: 8.90" (226 mm)
Weight (Approximate): 2.20 lb (997.90 g)
Miscellaneous
Package Contents:
- PRO B840M-B Gaming Desktop Motherboard
- European Union Regulatory Notice
- Quick Installation Guide
- EZ M.2 Clip II Remover
- 2 x EZ M.2 Clip II
- I/O Shield
- SATA Cables
Warranty
Limited Warranty: 3 Year
Additional Warranty Information:
3 years - Warranty period of 36 months applies on new retail MSI motherboards.