
This portable drive comes with a NTFS driver for Mac, allowing users to cycle between Mac and PC systems without having to reformat. This is the first portable SMR drive. This model will include all of the newest features of their Backup Plus line, most notably Lyve app compatibility, free OneDrive access, and social media backup capabilities. Seagate's Backup Plus line of external drives will expand mid-July to include the 4TB portable drive (2.5-inch). This model will include all of the newest features of their Backup Plus line, most notably Lyve app compatibility, free OneDrive access, and social media backup capabilities. No such problems on a Mac (even if Time Machine is running using a partition on the drive).Seagate's Backup Plus line of external drives will expand mid-July to include the 4TB portable drive (2.5-inch). However, I find it almost impossible to eject the drives under Windows 10-it is always "in use" (either because of Dashboard, or Windows Backup, or Norton Utility and I have to shutdown the machine to remove it.

I had the 2TBs for over a year an d they perform well. I also have the 4TB Backup Hub and it is very bulky in comparison (its advantage is it has its own power and can connect other drives to it). Please note that there are many Seagate 4TB models, and not everyone is a slim one (the box DOES NOT say it is slim, but it is if you have the Model STDR40000100.

The 4TB has the same footprint as the 2TB, only a bit thicker.

Now I can simply take the drive on a trip and boot up any iMAC. It is certainly not the fastest drive but good enough for my day-to-day archiving purpose as well as running it as a boot disk on USB (even USB 2.0 on a 2009 iMAC (whose internal HD died, and buried inside since I don't want to open the iMAC). The Backup Plus Slim series of HD are excellent (I have two 2TB and 1 4TB) and affordable.
