MSI MAG B660 Tomahawk WiFi DDR4 Guide Rapide page 29

PCI_E1~3: PCIe Expansion Slots
BAT1
⚠
Important
∙ If you install a large and heavy graphics card, you need to use a tool such as MSI
Graphics Card Bolster to support its weight to prevent deformation of the slot.
For a single PCIe x16 expansion card installation with optimum performance, using
∙
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
card's documentation to check for any necessary additional hardware or software
changes.
JFP1, JFP2: Front Panel Connectors
These connectors connect to the switches and LEDs on the front panel.
PCI_E1: PCIe 4.0 x16 (From CPU)
PCI_E2: PCIe 3.0 x4 (From B660 chipset)
PCI_E3: PCIe 3.0 x1 (From B660 chipset)
JFP2 1
1 Speaker -
3 Buzzer -
Power LED
2
JFP1
1
HDD LED
1 HDD LED +
3 HDD LED -
5 Reset Switch
7 Reset Switch
9 Reserved
Buzzer
Speaker
2 Buzzer +
4 Speaker +
Power Switch
10
9
Reserved
Reset Switch
2 Power LED +
4 Power LED -
6 Power Switch
8 Power Switch
10 No Pin
Overview of Components
19