MSI GAMING EDGE WIFI MPG Z590 - PCI_E1~5: Pcie Expansion Slots; JTBT1: Thunderbolt Add-On Card Connector

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Overview of Components
PCI_E1~5: PCIe Expansion Slots
PCI_E1
PCI_E2
PCI_E4
PCI_E3
PCI_E5

Important
 If you install a large and heavy graphics card, you need to use a tool such as MSI
Gaming Series Graphics Card Bolster to support its weight to prevent deformation of
the slot.
 
the PCI_E1 slot is recommended.
 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

changes.
 
JTBT1: Thunderbolt Add-on Card Connector

1
2 16
15
1 TBT_Force_PWR 2 TBT_S0IX_Entry_REQ
3  4 
5  6 TBT_PSON_Override_N
7  8 No pin
9 Ground 10 
11 DG_PEWake 12 SMBDATA_VSB
13 TBT_RTD3_PWR_EN 14 Ground
15  16 