Not only am I able to stream high quality movies and TV shows via Kodi, but I can also watch media from an external hard drive or thumb drive.

Because you can connect an external hard drive or thumb drive, and since it's an Android box, you can go to the Play Store and download Plex and setup a Plex server to stream to other devices on your network.

We able to connect a 6tb external hard drive filled with 4K x265 movies and watched them on Kodi.

The internal hard drive has enough space, able to connect a 1t external drive to open/transfer files to and from.