Seagate is a major manufacturer of external hard drives. Seagate external hard drives are available in various storage capacities, sizes, and colors and have various additional functions. The advantage of external hard drives is that you can easily take them with you. That way, you can also use the hard drive elsewhere and have access to the data. You can automatically make backups of your PC. Seagate produces hard drives for both Mac and Windows, so there is always a Seagate external hard drive for you.