Everything you can do with the Fire TV Cube's Micro USB
Something that greatly differentiates the Fire TV Cube from the Fire TV 3 is the Cube's Micro USB port and the official support for expandability that comes with it.
Fire Stick 4K Max review: 's 4K streamer is familiar
How to Add Storage to Fire Stick OS 7/6/5 [A Full Guide
Buy Fire TV Cube, 4K Ultra HD, Hands-free Streaming Device
Fire TV Stick With Alexa Voice Remote Review
Fire TV Stick Ethernet Adapter,Ethernet Adapter for
External Storage Support Explained Across All Fire TV Models
Why went with slower Ethernet on the Fire TV Cube
OTG Cable for Fire TV Stick 4K Lite Max Cube, USB
Fire TV Stick 4K supports external USB drives and USB