Ports are one of the primary methods that tablets use to communicate with other devices, the other being WiFi. Such as Bluetooth are secondary methods and are not as important. What ports a tablet has can help define how easy it is to recharge, amongst other things.
The Tagital T7K comes with a standard micro USB port, used for connecting it to desktop and laptop computers and to recharge it. Standard ports are a plus, as these make replacing the cable much easier if it gets damaged.
The tablet also has a memory card slot and a 3.5mm headphone jack, as well as front and rear facing cameras.