AstroScout

It provides USB connectivity without needing to use an RS-232 to USB adapter. I use this port on my hand contoller to connect to a Raspberry Pi as a WiFi hub and then control the scope over WiFi from an iPad running Sky Safari. The advantage of this over using a Skywatcher WiFi adapter is that the hand controller still works. It is a lot easier using the physical arrow buttons for fine slewing control while looking through the eyepiece than it is to use the virtual buttons on the Sky Safai screen.