Expansion Slot; Pci_E1: Pcie 2.0 Expansion Slot - MSI H81I-S01 Manual

Expansion Slot

PCI_E1: PCIe 2.0 Expansion Slot

The PCIe slot supports the PCIe interface expansion card.
Important
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.
Getting Started 1-18