acpidump only shows one SIO, but does show COM1 and COM2 SIO: 'Name (_HID, EisaId ("PNP0A05"))' COM1:'Name (_HID, EisaId ("PNP0501")), Name (_UID, 0x01)' COM2:'Name (_HID, EisaId ("PNP0501")), Name (_UID, 0x02)' Marc