Microsoft Surface Pro 3 second experience

One month ago my new work device was delivered, a Microsoft Surface Pro 3. I decided to order one because of great look & feel, very good feedback (reviews) and Windows 10 in pipeline. A blogpost about my first experience can be found HERE. Let's have a look at my second experience, after using it for over one month now. Most of my experiences are positive, but some negative ones also!

Still very happy with my device, it's fast, quiet, and have a good battery. It's both a notebook and tablet. Let's have a look!

Pro's
-Fast (with i7 CPU, i5 performance don't know)
-Quiet (on battery always, on power not all the time)
-Battery (approx. 6/7 hours with Office and Internet open)
-12" display (sharp, resolution, pen support)
-Pen (great in presentations)
-Weight (1,1 kg with keyboard)
-New generation device, high wow factor!
-Windows 10 upgrade coming (free?)
-Kickstand (can be placed in all positions)
-It's both a notebook and tablet

Con's
-Fan blowing (on power only, not all the time)
-Out of sleep (when in sleep mode, it will wake up. for it seems because of the keyboard?)
-One USB port only (far too little to connect multiple devices!)
-Keyboard function keys (sometimes Fn is needed, sometimes not, which is confusing)

That's it for now. As you can see more pro's than con's are mentioned, so my total experience with the device is still very good. Hope that Microsoft can fix fan blowing with a future system firmware. Then it will be even better. Microsoft did a great job here!