Some Shuttles have SLIC in ACPITBL already and others don't. If there isn't already a SLIC then 0+2 should work OK. (I have done some that way and they were fine.) But if SLIC is present in ACPITBL then 0+2 and OEM methods will add a second SLIC and create a problem. For bioses with existing SLIC you should use ISA. The same goes for HP bioses. I usually use ISA for Shuttle & HP. It's the safest bet. But I see this bios doesn't have SLIC in ACPITBL so I think 0+2 would work in this case.