I am in the midst of adding vlans to my network and purchased two of these to act as end nodes for places where I have more devices than keystones.
Out of the box one of them worked fine and I was immediately able to get in and start working on it.
However the other one was a little painful to get going. I was able to plug it in and get to the management page but the default user and password would not work. I also ran into an issue where the reset protocol they listed did not work.
To reset these devices you will want to hold the reset button in WHILE it is powered on for 10 seconds. You should seethe lights cycle etc.
That aside they are pretty straight forward to setup for VLANs