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elf69

macrumors 68020
Original poster
Jun 2, 2016
2,333
489
Cornwall UK
So I have a '09 macbook with El Cap (10.11.5)

Got an adapter from work with VGA, DVI and HDMI (can only use one output at a time).

I seem to be getting no output.

How do I tell if the mac can even see the adapter?
nothing shows up in display under preferences.

How do I tell if it the mac or the adapter that is not working right?

I would like to use my 19" monitor as a mirror or extra display when at home for movies/youtube/etc.

The adapter is NOT apple but a generic, we sell at work and are usually of good build.
We sell these at just under £24 as not genuine apple.
 
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