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 Why does ESD380C not achieve the expected performance via Thunderbolt 4 / USB4? Why is my new external hard drive not working on my computer? Does the ESD series product support iPhone ProRes recording? Technical Support If the answer can't help you, you can contact the Tech Support Department Get Started