1

I have a DVI-VGA Adapter:

enter image description here

If I have a PC that only has a DVI port, and a monitor that only has a VGA port, what will be the output? DVI or VGA? And what if that was reversed? (I.e. Monitor only takes DVI and PC only takes VGA)

5
  • which type of DVI port does your computer have? as for the reverse, I don't think it would be possible without some reverse male/female adapters - which would make any such configuration unsupported by both the source and the receiver, and make any guess as to if it works or not very specific. Nov 2, 2014 at 23:22
  • I'm not sure I understand the question. Both the PC and the Monitor have female inputs.
    – Ben
    Nov 2, 2014 at 23:28
  • DVI-D is a digital-only version of DVI, and will not work with any passive VGA adapter, such as the one in your picture - DVI-A is analogue only DVI, and will work, as it's the same signal, only over a different pinout, which the adapter converts. DVI-I can carry either digital or analogue signals, and thus would work, provided that the source can also produce an analogue signal. For the reverse, you would need to find a receiver that can accept a DVI-A signal. In order to answer your question of "what will be the output", the specific type of DVI that you have needs to be given. Nov 2, 2014 at 23:35
  • Well the current DVI cable is a Single Link (DVI-I), while the adapter has a DVI-A. So you're saying that DVI-A and VGA are essentially the same thing?
    – Ben
    Nov 2, 2014 at 23:41
  • Yes I am saying DVI-A and VGA are essntially the same thing (minus the physical pinout, but same signal), and that specific combination should work (DVI-I cable + DVI-A outout) (within the limits of VGA) Nov 2, 2014 at 23:46

2 Answers 2

1

The final output (with the adapter) would be VGA/analog output. If it was reversed (you'd need a different adapter for this, by the way), the output would be DVI, which would have either a digital (DVI-D) or analog output (DVI-A).

1

All this does is break out the DVI-A connectors on a DVI-I port into a standard VGA connector. Essentially the only point of DVI-A is backward compatibility with older standards, and as such electrically the output is identical to VGA.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .