Hello, yes I can confirm this. I have a surface pro 3 (1mm thicker than surface pro 4), and I carry it with the type cover 4 in this case. It fits perfectly, to the millimetre, and so everything is very well held.
Yes, you can easily put the charger in there, as well as a 'small' laptop mouse that is not too thick, or a usb hub. I would say 2 items max. For info the pocket is about 24x15cm, and as the rest of the bag is made of Neoprene, so it can be extended for objects up to 2-3cm thick.
Thank you for your answer. In this case, is it possible to use the side pocket to put some accessories (mouse, adapter, USB hub)?
According to the Dicota support, this case is not suitable for the Surface Pro 4, hence my question. Thanks :)