Everything you can do with the Fire TV Cube's Micro USB port — Ethernet, App Storage, External Drives, Peripherals, FLIRC, OTG, and more

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.

Flirc Fire TV Edition - Flirc

USB OTG Cable Ethernet Adapter for Fire Stick 4K TV Cube Max Lite, Alexa Show 2nd Gen, Show 5 and Show 8 : Electronics

Everything you can do with the Fire TV Cube's Micro USB port — Ethernet, App Storage, External Drives, Peripherals, FLIRC, OTG, and more

Flirc Fire TV Edition - Flirc

Chromecast Ethernet Adapter, Micro USB OTG Hub to Attach Thumb Drive : Electronics

FLIRC USB Universal Remote Control Receiver : Electronics

AFTVnews, Fire TV & Fire TV Stick News, Guides, and Deals

Ethernet Adapter for fire Stick TV Cube, Google Chromecast Ultra, Tivo Stream 4K - Micro USB OTG Hub with Power Cable : Electronics

DSYJ Micro USB Host OTG Cable with Micro USB Power for Samsung S7 Edge, S6 Edge, S5, S4 & Nexus 10 9 7 4 Player + All Others 2 Pack : Cell Phones & Accessories

How to connect a USB Keyboard or Mouse to a rooted Fire TV Stick with an OTG Cable

USB 4K Micro Port OTG Power Cable Adapter for Fire TV Stick Firestick New

Flirc Fire TV Edition - Flirc

Oassuose 3 Pack OTG Cable Adapter for Fire TV Stick 4K Max/Cube/Lite,Powered Micro USB to USB OTG Adapter Compatible Android Smartphones,Tablets,Host Devices etc : Cell Phones & Accessories