I bought a set of 10 as I now have a car without a CD player but with a USB port for music. I use color coding: red for rock, blue for jazz, etc. All discs work fine for me, unlike others that may have had errors. Speed in my device immediately plays the last track I stopped on as expected, but it can take anywhere from a few seconds to a minute or two for the rest of the USB content to be fully indexed. It could be car radios or USB 2.0 drives. I've been experimenting with a few MKV movies to a TV or Roku player...there was noticeable lag in either the audio or a dropped frame or two. Considering how much I spent on 10 of them, I didn't have high expectations for the videos. As a bonus there is a small zippered pocket, also handy for the car.
Sandisk Ultra Flair 128 GB Silver USB Flash Drive: Reliable and High-Speed Storage
65 Review
32GB SanDisk USB Flash Drive (SDCZ430-032G-A46)
78 Review
Samsung BAR Plus 128GB - High-Speed USB 3.1 Flash Drive Titan Gray (MUF-128BE4/AM)
67 Review
Kingston DataTraveler flash drive 100 G3 256 GB, 1 pc. black
74 Review
π Seagate Expansion 3TB Portable USB 3.0 External Hard Drive (STEA3000400) in Black
60 Review
2 TB External HDD ADATA DashDrive Durable HD650, USB 3.2 Gen 1, Blue
55 Review
2 TB External HDD Western Digital WD Elements Portable (WDBU), USB 3.0, black
84 Review
Game console Microsoft Xbox One X 1000 GB HDD, black
53 Review