What are the best tablets for replacing a Microsoft laptop?

The Surface has a USB 3.0 port that can be used for a mouse to be plugged in, or you can plug in a USB hub or Microsoft's own Surface Dock, which has 4 USB 3.0 ports, audio output, Gigabit Ethernet, and two HD video ports. The Surface Dock allows for as much expandability (or more) as most laptops out there. There's also a SD card slot if you need more storage (current SD card sizes range up to 200GB, although this won't be as fast as the internal SSD speeds).