Using the company's latest 7mm 2.5” HDD technology, the Ultra Slim follows the Backup Plus Slim Drive, offering the same generous 2TB in storage capacity but in an even thinner form factor at just 9.6mm in overall thickness. The Ultra Slim was announced in January of this year and touted as one the thinnest 2TB portable hard drives on the market. The 4TB model tested here today enjoys a $129.99 MSRP $20 lower than the previous generation.Comprised of a variety of different sizes and designs, the Seagate Backup Plus family is the company’s line of portable storage solutions focused on capacity, performance, and portability. In closing, the Backup Plus Portable is still the tried and true workhorse we all need it to be, and with its latest refresh enjoys a sizeable price cut. In testing, I was able to reach 110/120 MB/s, which is pretty decent for a portable HDD. With that said, there isn't a real need for increased performance within the enclosure of the Backup Plus lineup, the drive used internally is your basic Barracuda 5400RPM drives. Keeping costs down, Seagate has also chosen to stick with the micro B USB 3.0 interface for this run which does take away from consumers that have upgraded to USB-C. Seagate continues this with-it latest refresh offering the same high capacity solutions of the last generation with a new blend of plastic enclosure and colored aluminum. The Backup Plus portfolio for the longest time has been one of the best bangs for your buck lineups in portable storage. Performance of the Backup Plus Portable came in at 110 MB/s read, and 120 MB/s write.

4tb seagate backup plus slim