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The PRO B840M-B is a business-oriented mATX motherboard constructed around the latest AMD B840 chipset which supports AMD Ryzen 9000 / 8000 / 7000 series desktop processors, featuring PCIe 4.0, 2.5G LAN, DDR5 and Frozr design that delivers the capacity to support a broad spectrum of both cutting-edge and innovative hardware.
The PRO B840M-B motherboard supports AMD Ryzen 9000 / 8000 / 7000 Series processors.
Form Factor: mATX
Socket Type: AM5
Chipset: AMD B840
With exclusive Core Boost technology and EZ OC Tuning functions, the PRO B840M-B is able to sustain heavy CPU power loads to support system-demanding settings:
Digital PWM IC
7-Phase direct CPU power (P-PAK)
2-Phase SOC Power
1-Phase MISC Power
Frozr Sync: Connect and synchronize cooling with strategically placed pin-headers - including CPU fan header (2A) and system fans(1A).
Frozr Control: Manage speeds and temperature for all fans of your system in MSI Center with Cooling Wizard and Frozr AI Cooling.
Memory Boost: A fully-isolated DDR circuit delivers pure data signals for optimal gaming and overclocking performance.
High-Efficiency Mode: Enabling High-Efficiency-Mode in the MSI BIOS increases memory bandwidth and reduces latency. Four different modes allow users to find out the optimal configuration based on the quality of their memory modules.
EXPO Profiles in the MSI BIOS are MSI OC LAB optimized and can be easily enabled with auto power settings for optimized memory speed and stability.
MSI PRO B840M-B mATX Socket AM5 Motherboard
Wireless Communications
| Bluetooth | No |
Key Features
| Socket | AM5 |
| Installed Processors (Max) | 0 (1) |
| Integrated Graphics Supported | Yes |
| Maximum RAM | 128 GB |
| RAID Supported | Yes |
| RDIMM Memory Supported | No |
| RDIMM Memory Required | No |
| Wireless Network | No |
| Motherboard Width | 244 mm |
| Motherboard Height | 244 mm |
| Number of PCI Express Slots | 2 slot(s) |
| Main Colour | Black |
| Memory Channel | Dual |
| On-board Audio Type | 7.1 |
| Number of SATA Ports | 4 port(s) |
| Number of USB Ports | 6 port(s) |
| USB 3.0 Support | Yes |
| Multi GPU Support | No |
| VGA Connection | Yes |
| DVI Connection | No |
| HDMI Connection | Yes |
| DisplayPort Connection | No |
| Memory Type | DDR5 |
| Motherboard Form Factor | mATX |
| Motherboard (EPS) Power Connectors | 4+4-Pin |
| Motherboard Chipset | AMD B840 |
| Thunderbolt | No |
| Motherboard Model | MSI PRO B840M-B |
| USB 3.1 Support | No |
| Internal USB3.0 Header | Yes |
| M.2 Support | Yes |
| Internal USB Type-C Header | Yes |
| Power Requirement (auto) | 60 W |
| Max Memory Speed Supported (Non-overclocked) | 5600 MT/s |
| Max Memory Speed Supported (overclocked) | 8000 MT/s |
| CPU Power Pins (female) | 8 |
| Total M.2 Slots | 2 |
| Maximum NVMe M.2 ports | 2 |
| SATA ports | 4 |
| Back Connect Support | No |
CPU
| CPU Socket | Socket AM5 |
| CPU Brand | AMD |
Warranty
| Warranty | 1 Year |
Item Details
| Manufacturer | MSI |
| Manufacturer Code | PRO B840M-B |
| EAN | 4711377360166 |
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