VBE call to get connected ports

Let’s say we have a triple monitor card.
Is there a VBE call to get the numbers which ports monitors are connected to before calling 0x10 0x4f15 to get the EDID for each (eg only 0 and 5 connected) or do we have to call 0x4f15 for each possible port (ie 0, 1, 2, 3, 4, 5, 6, 7 …) even if not connected to anything?

  • Keith