14
Overview of Components
PCI_E1~6: PCIe Expansion Slots
PCI_E1: PCIe 3.0 x16 
PCI_E2: PCIe 3.0 x1 
PCI_E3: PCIe 3.0 x1 
PCI_E4: PCIe 3.0 x4 
PCI_E5: PCIe 3.0 x1 
PCI_E6: PCIe 3.0 x1 
x16 x16
x4
Multiple graphics cards installation recommendation
 Important
 y
The PCI_E4 slot will be unavailable when an M.2 PCIe SSD module has been 
installed in the M2_2 slot.
 y
The PCI_E2/ PCI_E5 slot will be unavailable when an expansion card has been 
installed in the PCI_E3/ PCI_E6 slot.
 y
If you install a large and heavy graphics card, you need to use a tool such as MSI 
Gaming Series Graphics Card Bolster to support its weight to prevent deformation 
of the slot.
 y
For a single PCIe x16 expansion card installation with optimum performance, using 
the PCI_E1 slot is recommended.
 y
When adding or removing expansion cards, always turn off the power supply and 
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.