I've just finished a couple weeks of testing and am very pleased. I've tried a couple of USB thumb drives and I've watched videos about SSD drives, but an SD Endurance card is the best. It was designed for the type of recording we do with TeslaCam.
I'll really like the SD adapter with USB-A, USB-C, and lightning. I pop it into my phone for a quick look in the car; then pop it into my Desktop. Thanks for the TeslaCam app [by Snailboat Apps] on my Samsung and the web app for my Desktop or Surface Pro 7, which does both USB-A or USB-C.