Summary: The actual switch is even smaller than you see in the picture. It works great and I have attached it to the wall with some double sided 3M tape, next to the RJ-45 outlet. It's small and does what it needs to do and doesn't get hot but doesn't come with a wall mount kit.
Summary: if you need a gigabit wired switch, i doubt you'll find a better device cheaper than this one. it's small, convenient and just does what it's supposed to do. as expected, there is nothing to configure at all. just plug in your cables and move on to the next project. next time i need one, i won't bother shopping around and will just reorder one of these. highly recommended.