Works well running a 1080p monitor. I did download the latest drivers instead of using the CD that came with it. I’m not confident the CD drivers will work with High Sierra. I use it only for work as a second monitor and it operates quite smoothly. There is a very tiny lag I would not use it for gaming. Also, I’ve noticed the driver takes a bit of CPU if I’m doing something like playing a video on that monitor. However, I currently have my Air running a 27” at 2560x1440 on the built-in miniDisplay port, a 22” at 1920x1080 using USB and this device as well as the built in monitor at 1440x900. I couldn’t do that on my Air with out this device and the only setup was installing the drivers and plugging everything in.

Very easy to install and was exactly what I had in mind to accomplish my dual screen setup.

It was extremely easy to get going and running, pop in disc and voila. However, no adjustment or calibration on the monitor has been able to even compare with my main monitor. I'm hoping fiddling with another driver might prevail, however its a good thing that I mostly look at documents. If you are contemplating this for image editing, it would be better invested in just getting an additional video card.

PROS: easy set up

CONS: Considering past purchases, I suspect a better driver might do better with the adaptor than the stock monoprice-provided one. As strong as their products, the drivers just seem weak to barely competent.