I Have a belkin kvm switch what is the the ivories shortcut to switch pc's?

I Have a belkin kvm switch what is the the ivories shortcut to switch pc's?

My belkin is scroll lock twice and consequently either the up or down arrow.
Assuming I hold the same model, you press scroll lock + 1 for the first PC, scroll lock + 2 or the second PC, etc., and scroll lock + 0 to alternate the screen automatically.