Fire TV Stick 4K supports external USB drives and USB peripherals via an OTG cable

The Fire TV Stick 4K doesn't officially support connecting anything to it except 's Fire TV Ethernet Adapter, but, using an inexpensive OTG cable it's possible to use USB peripherals, such as keyboards and wired gamepads, as well as external USB drives.

Fire Tv Stick Otg Cable

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Cable Adapter For Firestick 4K Fire Stick TV B8L2 OTG add T0B0 USB USB Keyboard T8G4

Allows you to connect any USB device to the Fire TV Stick and transfer photos, videos, documents and other data between the device and external

OTG Cable Adapter for fire Stick 4K Max,Added Memory to Your fire tv Stick,Compatible with Streaming Android Phone Tablet etc Device 3-Pack

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2 Pack OTG Cable Replacement for Fire Stick 4K, Fire TV, Compatible with Samsung Galaxy LG Android Phone Tablet Micro USB Host with Micro USB Power : Cell Phones

For Fire Stick Usb Otg Port Adapter Cable 4k 2nd Gen Fire Cube & Fire Tv3

OTG USB 3.0 Hub supplied with FREE OTG cable Fire TV Fire Stick 4K Lite

Connect USB devices and Ethernet to your Fire TV Stick!