
I am very happy with this product. I bought this duplicator because it clones 512 byte 4 KB physical sector hard drives. The last cloning dock I bought was the Vantec NexStar USB 3.0 Duplicator (NST-DP100S3) which is limited to cloning hard drives with 512 byte physical sectors, which is stated in the product description on the Revain or Vantec website was not explicitly stated. Don't worry about formatting your hard drive with StarTech Duplicator as it easily clones 512 byte sector and 4 KB sector 22GB/m drives with offline capability. Please note that according to a StarTech Customer Service Representative I spoke to, this version I'm reviewing, SDOCK2U33RE, has twice the offline copy speed of the less expensive SATDOCK2REU3 version. This is just my first analysis and I intend to do more thorough testing.

Seagate 1TB Mobile HDD SATA 6Gb/s 128MB Cache 2.5": Internal Bare Drive (ST1000LM035) - Reliable Storage Solution for Enhanced Performance
28 Review

Seagate Momentus 2 5 Inch Cache ST1000LM024
57 Review

WD Blue Desktop 1TB Hard Drive - 3.5 inch, 5400~7200RPM, SATA3 (6.0GB/s), 64MB 💾 Cache, Ideal for PC, Mac, CCTV, NAS, DVR, Raid and SATA Applications, 1 Year Warranty
176 Review

💾 Seagate Compute 2TB Internal Hard Drive HDD – 3.5 Inch SATA for Desktop PC (ST2000DM01C)
93 Review

18 TB External HDD Western Digital WD Elements Desktop, USB 3.0, black
95 Review

Shock-Resistant Transcend StoreJet 25M3 USB 3.1 Slim Portable Hard Drive with 500GB Capacity
99 Review

8TB Seagate Backup Plus Hub Desktop Hard Drive with Data Recovery Services
56 Review

Game console Microsoft Xbox One X 1000 GB HDD, black
53 Review