MSI X99A RAIDER

Chapter 1
1-21
Getting Started
Expansion Slots
This motherboard contains numerous slots for expansion cards, such as discrete
graphics or audio cards.
PCI_E1~5: PCIe Expansion Slots
The PCIe slot supports the PCIe interface expansion card.
PCIe 2.0 x1 Slot

PCIe Bandwidth Table
󰀲 
Bandwidth
1-Way 2-Way 
CPU Type
40
lanes
28
lanes
40
lanes
28
lanes
40
lanes
28
lanes
PCI_E1
3.0 x16 3.0 x16 3.0 x16 3.0 x16 3.0 x8 3.0 x8

3.0 x16 3.0 x8 3.0 x16 3.0 x8
PCI_E5
3.0 x8 3.0 x8
M.2
3.0 x4 3.0 x4 3.0 x4 3.0 x4 3.0 x4 3.0 x4
SATA Express
2.0 x2 2.0 x2 2.0 x2 2.0 x2 2.0 x2 2.0 x2
Important
 For a single PCIe x16 expansion card installation with optimum performance, using
the PCI_E1 slot is recommended.
 󰘯
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.