MSI AM-780E V1.1 - Manual (Page 24)

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HARdWARE SETuP
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PCI (Peripheral Component Interconnect) Express Slot
The PCI Express slot supports the PCI Express interface expansion card.
The CON1 is Mini PCI-E connector for wireless LAN, TV tuner, and Robson
NAND Flash .
PCI (Peripheral Component Interconnect) Slot
The PCI slot supports LAN card, SCSI card, USB card, and other add-on cards
that comply with PCI specifications.
S
lot
Important
When adding or removing expansion cards, make sure that you unplug the
power supply first. Meanwhile, read the documentation for the expansion card
to configure any necessary hardware or software settings for the expansion
card, such as jumpers, switches or BIOS configuration.
32-bit PCI Slot
Mini PCI-E Slot