I have mastered many technologies in my life. These drives are among the fastest external drives available. I've set up 2 of these in a RAID configuration and they're testing about the same speeds as my Macbook Pro internal drives. OWC is a great third party for Apple. Highly recommended.
Shock-Resistant Transcend StoreJet 25M3 USB 3.1 Slim Portable Hard Drive with 500GB Capacity
99 Review
π Seagate Expansion 3TB Portable USB 3.0 External Hard Drive (STEA3000400) in Black
60 Review
18 TB External HDD Western Digital WD Elements Desktop, USB 3.0, black
95 Review
π Seagate Backup Plus Slim STHN2000400 2TB Portable Hard Drive - Black: Your Reliable External Storage Solution
93 Review
π΄ Renewed Samsung Portable SSD T7 500GB USB 3.2 External Solid State Drive Red
20 Review
Seagate BarraCuda 500GB Internal Hard Drive HDD - Reliable, High-Speed Storage Solution for Desktop PC - SATA 6 Gb/s, 7200 RPM, 32MB Cache (ST500DM009)
11 Review
π StarTech.com 3.5in Silver Aluminum USB 3.0 External SATA III SSD / HDD Enclosure with UASP - Portable USB 3 3.5" SATA Hard Drive Housing (S3510SMU33)
10 Review
Samsung T5 Portable SSD MU PA500B
88 Review