Had to reboot to get the discovery process to work. Just plugging the adapter in with the projector attached did not start the discovery process. My laptop will discover devices connected through the HDMI port but I wan unable to have the projector discovered on the Thunderbolt port. Only when rebooting the machine was the port able to recognize the projector and configure it. Do not know if this is normal or an artifact of the adapter, as i only have the one adapter to test.Works fine once connected.
Failed to work with my MacBook Pro and a projector (VGA input)
I've never had trouble with an adapter from MonoPrice before, but although this one worked at home with my old VGA monitor, it completely failed to work with the Epson projector (VGA input) at the school in which I work. I ended up ordering an Apple branded adapter instead, which works perfectly.
I work in AV support at an educational center. Presenters can come in with any of the recent and not-so-recent video connection standards. This little gem has worked without fail each time I have used it, unlike a more expensive brand purchased elsewhere. Mac, Dell and HP, no problem. Ordering more to eliminate conflicts caused by having only the one we ordered first as a test.
PROS: Low cost, Works every time (so far), Great item for my bag-o-tricks