Asus X99 Deluxe - SLI bridge?

[faxfan]

Hi,

I'm looking to add a 2nd GTX1080 on a X99 deluxe.

The spacing is -

Slot 1 PCIE16_1 - GPU
Slot 2 PCIE 4 -
Slot 3 PCIE16_2
Slot 4 PCIE16_3 - GPU

I'm not entirely clear how the naming works with the bridges, I assume I'm looking for a "2 slot" spacing (assuming that refers to the actual empty slots..)?

 

[FredFlint]

There is a small switch on the mainboard that turns LED’s on next to the PCI-e slots to show where the cards go for 2way/3way SLI/Crossfire.

 

[faxfan]

There is a small switch on the mainboard that turns LED’s on next to the PCI-e slots to show where the cards go for 2way/3way SLI/Crossfire.

Thanks, but that's not what I'm asking. I'm looking for confirmation about which SLI bridge to use. Do you have SLI, what slots / bridge are you using?