All iPads have a lightning port for data transfer as well as Bluetooth and Wifi. No wires needed. I think you are actually complaining about not having access to the file system but don't know it.Until Apple put couple usb-c ports and external monitors and storage could be used with iPad you couldn't compare it to laptop.
The iPad Pro adds a special new data and power port with a protocol not specified, but might even include Thunderbolt for all we know, at this point.
My iPhone does Airplay to my big screen. That's an external monitor and sound system,
Rocketman
Last edited: