If your Fire TV Stick 4K is not recognizing a USB drive, here are some troubleshooting methods to help you fix the same.
Firestick Not Working? [2024 Troubleshooting Guide]
USB Adapter not working on Firestick
How to Connect a Fire Stick to a USB Drive
This bundle contains Fire TV Stick 4K Max and Mission USB Power Cable. The USB power cable eliminates the need to find an AC outlet near your TV by
Fire TV Stick 4K Max with USB Power Cable (eliminates the need for AC adapter)
Firestick Not Working? [2024 Troubleshooting Guide]
Fire TV Stick 4K supports external USB drives and USB peripherals via an OTG cable
Ethernet Adapter for Fire TV Stick, Electop Micro USB to RJ45 Ethernet Network Adapter Compatible with 4K Fire Stick,Chromecast Google Home Mini and More Streaming TV Sticks(Adhesive Tape Included) : Electronics
How to Install a VPN on a Fire TV Stick
7 Best Fixes for Fire TV Stick 4K Not Recognizing USB Drive - Guiding Tech