MSI H170A GAMING PRO User Manual page 27

PCI_E1~4, PCI1~3: PCIe and PCI Expansion Slots
Multiple graphics cards installation recommendation
x16
Important
● For a single PCIe x16 expansion card installation with optimum performance, using
the PCI_E2 slot is recommended.
● The PCI_E4 slot will only run PCIe 3.0 x1 speed when the PCI_E1 or PCI_E3 slot
is installed a device.
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.
PCI_E1: PCIe 3.0 x1 slot
PCI_E2: PCIe 3.0 x16 slot
PCI1: PCI slot
PCI_E3: PCIe 3.0 x1 slot
PCI_E4: PCIe 3.0 x4 slot
PCI2: PCI slot
PCI3: PCI slot
x16
x4