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MSI PRO B840M-B Motherboard, mATX - Supports AMD Ryzen 9000/8000 / 7000 Processors, AM5 - DDR5 Memory Boost (8000+ MT/s OC), PCIe 4.0 x16, M.2 Gen4, 2.5G LAN

MSI PRO B840M-B Motherboard, mATX - Supports AMD Ryzen 9000/8000 / 7000 Processors, AM5 - DDR5 Memory Boost (8000+ MT/s OC), PCIe 4.0 x16, M.2 Gen4, 2.5G LAN
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For Government/Education/Business pricing, please call 440.355.8008


Your Price: $157.34
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Business Elegance
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.

  • Supports AMD Ryzen 9000 / 8000 / 7000 Series Desktop Processors (Zen 5, Zen 4, AM5)
  • Ultra Power: Direct 7 Phases with P-PAK, 6-layer PCB, 2oz thickened copper
  • 2 x DDR5 DIMMs with Memory Boost: Dual Channel (128GB Max. / 8000+ MT/s OC)
  • 1 x PCIe 4.0 x16, 1 x PCIe 3.0 x1
  • Lightning Gen4 M.2 slots
  • High-speed Connectivity: Realtek 2.5G LAN
  • 8-Channel (7.1) HD Audio with Audio Boos

WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
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Shipping Restrictions
  • This item cannot be shipped to PO Boxes.
  • This item can be shipped only within the U.S.


  • UPC: 824142430972 
  • Mfr's Part #: PROB840MB