Perfect!
In addition to my main screen (LG 29 UM67 29" 21/9), I wanted 2 additional screens on each side and this screen meets my expectations perfectly.
The colours are perfect and the DVI connectivity (cable supplied) allows me to connect these screens without any converter.
As a programmer I highly recommend this type of screen configuration which gives a just perfect workspace:
[17" 4/3] [29" 21/9] [17" 4/3]
Finally, a perfectly recognized screen under Linux (Ubuntu 16.04 / Linux Mint 18).