[quotemsg=18281551,0,47340]The 970 chipset normally doesn't provide a second x16 PCIe slot; it's x4. SLI requires a minimum of x8; please clarify that this board actually supports SLI in a x8/x8 configuration. Thanks.
Also, when a M.2 drive is installed (of either type), are any other ports/slots disabled?
[/quotemsg] This board drives 16 lanes to the first connector if only the first PCIe x16 is installed The board then switches to an x8/x8 if a card is installed in the 2nd x16 slot. The 970's x4 dedicated lanes go to the M.2 slot. 2 PCIe x1 slots round out the config totaling in 22 PCIe gen 2 lanes available.