All the HDMI inputs are located on the OneConnect Box which could clutter your setup. The LEDs of the backlight are located at the bottom which is why the heat will be coming from there.
What you get is 4 HDMI 2.0 ports, all of them being HDCP 2.2 compatible, 2 USB ports for connecting external storage, a digital optical output, aerial inputs and the TV connector. On the TV you will find an extra USB port along with an Ethernet port for wired connection to the internet.