A:Answer This line of premium Galaxy tablets (starting with the Tab Pro, Tab S, and Tab S2 (T710, T810, T713, T813, ...) all have a microUSB port that is OTG and MHL compliant. I actually tested the Tab Pro 8.4 and the Tab S2 (T810) and wired screen casting works fine, I also have the Tab S2 (T813), but I haven't tested it yet with an MHL adapter.
For MHL, you will need an MHL adapter with an 11-pin microUSB plug (or a 5-pin to 11-pin adapter.) The downside of wired screen casting is that you can't charge the tablet while casting. The MHL adapter makers all claim that the USB port they use to power the MHL aapter will also charge your device -- but they only put out at most 1 amp, and the tablet requires a 2 amp charger -- so your tablet battery is going to be depleting while casting by wire..
Another downside to screen casting (wired or wireless) is, if you are casting to a HDTV, the MHL adapter has to drop about 50% of the pixels(because you are casting from a higher resolution device). So if you want the same picture quality,you need to be casting to a UltraHD TV with a MHL adapter that supports 2k or 4k resolution.