From the Classy K Manual page 12.
PCI-E Lane Distribution PE1 – x16, (x8 if PE2 or PE3 is used) lanes from CPU PE2 – x8, (x4 if PE3 is used) lanes from CPU PE3 – x4, 4 lanes from CPU PE4 – x4, 4 lanes from PCH PE5 – x1, 1 lane from PCH PE6 – x1, 1 lane from PCH Should answer your question
edit: add color
post edited by KenMcC - 2016/08/26 09:01:55
KenMcC
Z170 Classy K; i7-6700 CPU,
Corsair CMK16GX4M2A2400C14
Seasonic SSR-360GP 360W;
Samsung 950 Pro M.2 256 GB
Samsung 850 Evo 500 GB SATA
Samsung 850 Evo 256 GB SATA
Samsung SSD 840 Series 250 GB SATA
Samsung 860 EVO 1 TB SATA
Windows 10 x64 Prof.