PS4 external hard drive for game updates?

So I have a PS4 with the 500 gb hard drive and all from 2014 when they were being first released, and as of late I have had to delete updates for games (NOT dlc's / add-ons ) so I could update games or download a new one because I am lacking space. I have a good 7 games that I really like to play and rotate them through often enough that deleting the updates isn't logical or worth it as I have 5mb/s Internet at best. Is there anyway to connect an external hard drive via USB and move games /updates back a forth? Or is there any way to buy a hard drive and install it? Thanks all!