As long as your external HDD is a USB 3.0 device it should work fine.
As for the crash dump when you press home, that a different issue related to not having a proper Nintendont forwarder channel installed.
It's a 2.0 and 3.0 USB drive HDD, and that y cable has one 2.0 and one 3.0 USB on it. It should work fine. Also, that makes sense, since I'm loading Nintendont via The Homebrew Channel. What would you recommend be the best program? Also, I appreciate the help and fast replies. I was searching for hours before deciding to ask around.