MSI H6M-E33 (G3) User Manual page 23

pCie (peripheral Component interconnect Express) 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.
pCie x6 slot
pCie x slot
MS-7788
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