The X9SC* series motherboards support pci express gen 1.0 and 2.0 in all slots. Any standard-compliant pci implementation is downward-compatible, which means every 2.0 slot also is a 1.0 slot, and every 3.0 slot is also a 2.1 one, which is a 2.0 one, which is a 1.0 one, too.
The SAE-V board...