I watched this item for 3 months listed as "temporarily out of stock", then a note was added "your card will not be charged until the item is shipped" So I took the chance and ordered it. It wasn't two weeks before I received it. It's still listed as out of stock at the time of this writing.

As to the product, I was looking for an adapter that allows you to use both the video out and USB port while providing a RJ45 port, this one does. The item provides two 3.0 USB, 1 RJ45, and 1 video out. It's made of plastic and it feels like I could crush it in my hand. It's a very tight fit as you slide it into the USB and Display Port on the Surface Pro 4. Something I was hoping for. There is more than enough room to easily connect the AC power connector and the kick stand is able to function without issues. The ports work well and it did not seem to load any drivers to work like my Unitek model did, which may be a Windows 10 thing. There is a blue LED light that lights up when attached to Surface Pro to let you know its connected which could become annoying for some, its not really bright but its bright enough. The item is so light you really do not notice any additional weight to the Surface Pro 4. It's thick, 1" in depth, 1 3/8" in width, and 3 3/4" in length. Since its depth is 2x the Surface Pro 4 I wouldn't recommend leaving it attached for travel. However, removing it do to the sung fit is a small challenge. The RJ45 beats hands down any WiFi connection and allows for true network speed. I've only used it for a short period, at this point I am please with its potential.