What is the factory default file system for Transcend products? Category : Specification / Capacity / Performance The factory default file system is determined by the product category, series, and storage capacity, as shown in the table below. Is the answer helpful? Related After I run Online Recovery tool, the capacity of my JetFlash USB Flash drive decreases after being used for some time. How do I format my StoreJet? My computer cannot recognize my StoreJet, and the OS asks me to format my StoreJet (external-HDD). What should I do if data transferring is being interrupted? Technical Support If the answer can't help you, you can contact the Tech Support Department Get Started