Dimm Slots; Pci_E1~E3: Pcie Expansion Slot - MSI B250M PRO-VH Mode D'emploi

DIMM Slots

Please install the memory module into the DIMM slot as shown below.
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Important
Due to chipset resource usage, the available capacity of memory will be a little less
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than the amount of installed.
Please note that the maximum capacity of addressable memory is 4GB or less
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for 32-bit Windows OS due to the memory address limitation. Therefore, we
recommended that you to install 64-bit Windows OS if you want to install more than
4GB memory on the motherboard.

PCI_E1~E3: PCIe Expansion Slot

Important
When adding or removing expansion cards, always turn off the power supply and
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unplug the power supply power cable from the power outlet. Read the expansion
card' s documentation to check for any necessary additional hardware or software
changes.
If you install a large and heavy graphics card, you need to use a tool such as MSI
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Gaming Series Graphics Card Bolster to support its weight to prevent deformation
of the slot.
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PCI_E1: PCIe 3.0 x16
PCI_E2: PCIe 3.0 x1
PCI_E3: PCIe 3.0 x1
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Overview of Components
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