PS4 Media Player + Storage Devices?

[Skyla Doragono]

I've been looking online to see how much space a PS4 can see up to in regards to using the Media Player, and haven't had much luck.  Does anyone know for sure?  I have a 1TB portable harddrive, and I wanted to check first before I just hooked it up.

There is a very high chance I'm just being blind again, in which case you can just call me an idiot.