My son's PC has a mobo with 3 PCI slots -- one x16, the other two x1, model Gigabyte GA-H110M-S2H. Only the x16 slot is filled, with a GTX 1060 graphics card, but when I run Speccy it shows all 3 slots "in use". Reason? Could the 1060 be using all the lanes, even though just one slot? (sorry, don't really understand lanes -- just guessing!). Will we be able to use one of the empty x1 slots or not? Or is this a known Speccy issue? Thanks!