Recently ordered a Surface Pro 3 from Amazon and went ahead and ordered the Plugable UD-3900 at the same time. I couldn't be happier with the way they work together. Already owned wireless keyboard and trackball that I used with a four year old Asus laptop, so I didn't need the Surface keyboard (nor did I want to spend another $130 for it). Wanted the ability to use external monitors, but didn't want to pay an additional $200 for the Surface dock. Thankfully, the UD-3900 solves all these difficulties AND provides additional connection ports for external drive, USB drives, and other attachments. One of the problems I had encountered with devices that sit vertically and have multiple connections is their tendency to move around on the desk due to the pulling of the connected cables. This device appears to have just enough mass to prevent that from happening. Reading Amazon reviews prior to my purchase, I was impressed by the way the company appears to stand behind their products. I saw quite a few comments from Plugable following reviews from those who encountered problems with the product. I was also impressed with the video reviews on Youtube that I believe were done by the company's owner or president. Amazon makes it easy to read many reviews, and when a company stands behind their products the way Plugable appears to do, it makes me want to help expand their business.