The Seagate Thunderbolt adapter driver is only needed if you are using 3TB or 4TB drives with the Thunderbolt adapter and plan to change drives with other GoFlex adapters (such as USB or FireWire). If you don’t intend to use the drive with other adapters it can be reformatted and the software is not needed.
Original software for MacOS that was loaded on the GoFlex for Mac, GoFlex Desk for Mac, or GoFlex Pro for Mac drive, including the driver for the capacity lights (for GoFlex Desk for Mac only) and Seagate Diagnostics.
The driver provides read and write access for Seagate external drives in Windows without having to reformat.Note: Not compatible with drives formatted with Apple File System (APFS).