If you're looking to increase the storage capacity of your Firestick, whatever version you have. These are flash drives to use. They're very fast, and the Firestick will recognize them when they're connected. There is a lot of information on how to increase Firestick storage if you don't know how. Now I can download as many apps and games as I want and still have enough room for Firestick OS to stretch my legs.
Sandisk Ultra Flair 128 GB Silver USB Flash Drive: Reliable and High-Speed Storage
65 Review
Titan Gray Samsung BAR Plus 256GB USB 3.1 Flash Drive (MUF-256BE4/AM) with Up to 400MB/s Transfer Speed
69 Review
32GB SanDisk USB Flash Drive (SDCZ430-032G-A46)
78 Review
Compact and Convenient: SanDisk Cruzer Fit USB 32GB Flash Drive (SDCZ33-032G-A11)
66 Review
Shock-Resistant Transcend StoreJet 25M3 USB 3.1 Slim Portable Hard Drive with 500GB Capacity
99 Review
8TB Seagate Backup Plus Hub Desktop Hard Drive with Data Recovery Services
56 Review
π Seagate Expansion 3TB Portable USB 3.0 External Hard Drive (STEA3000400) in Black
60 Review
2 TB External HDD Western Digital WD Elements Portable (WDBU), USB 3.0, black
84 Review