Cinolink USB 3.0 to SATA Dual-Bay External Hard Drive Docking Station with Offline Clone/Duplicator Function for 2.5 & 3.5 Inch HDD SSD SATA (SATA I/II/III) Support 2 x 12TB & UASP, Tool-Free

No instructions included, but easy to figure out. I was able to retrieve old data from my dads old laptop drive. Wish I had purchased this sooner.

It is compact and takes up little space. I like the two lights that show that it is on and when it is working. It seems fast and has worked with two different internal drives I had laying around. Everything I needed was in the box. It is important to be careful when sliding a drive into it to make sure the plugs line up. I like it.

This product really saved me memories. Thought my hard drive was done but ended up just having windows corrupted. After I got a new hard drive and installed windows. I used this to read my old hard drive and re save all my pictures and music. Now I have another external drive.

ASMedia chip makes it 5 * for me. The main review is in the next paragraph, some instructions and fine points follow.I have now owned this for 5 months and used it many times. Perfect performance with enough speed. I have used it for backup, and offline cloning. The documentation is not stellar but it's OK. The feel is solid; cables for power and USB seem snug in their sockets, but do not nudge them! The ASMedia chip has a good reputation, so I think ongoing operations will be smooth. I am using two 2TB enterprise HDDs, which tend to run a bit hotter than consumer drives. Using crystaldiskinfo and crystaldiskmark In a room about 20 degrees C., I am seeing temps below 32 degrees C during the most intense long duration use and benchmarking tests . Sequential read/write speeds from a screaming fast NVME SSD equipped computer are of about 190 and 400 MB/s on a USB 3.0 port. Disk to disk cloning is faster. I like this a lot!NEVER PLUG IN OR REMOVE A DRIVE INTO/FROM THIS DOCK WHILE ANOTHER DRIVE IS MOUNTED (through this dock) ON YOUR COMPUTER. It warns you about that in the friendly manual.TO USE AS DISK CLONER: DO NOT connect the USB cable!!!!!! 1: plug power into wall and dock and ensure that switch is OFF 2 insert BOTH drives making sure that you do not need the data on the target drive, 3: power on the dock, 4: press the not-so-accessible button on the back labeled start for three seconds and release, 5: briefly hit the same button and a tiny blue led at the bottom front of the unit (can be a bit hard to see) will flash under "25%". That led will go solid and the next one will flash (under 50%) as cloning progresses. When the 100% LED is solid, turn off switch and remove disks.FOR USE CONNECTED TO A COMPUTER (like backup or file transfer): 1: plug power into wall and dock and ensure that switch is OFF. 2: plug USB cord into host computer and dock, 3: plug drive(s) into slot(s) 4: power on the dock. In windows 7 I did typed disk into the computers search box (magnifying glass in taskbar), found the app to partition the new disk and used that app to initialize it. It automatically named with the disk manufacturer's name. To disconnect: 1. Use the "safely remove hardware" button in your taskbar, 2.: when you get an OK to remove notice, turn switch off, 3.: remove disks. 4.: Unplug power and USB.BTW to use the "safely remove hardware" button in the taskbar I had to go to "my computer", right click the disk, hit properties then policies, and optimize the particular drive for performance rather than for removal. In the default (optimized for removal) setting, the disconnect button in the taskbar did not work; when I tried, it always said the drive was in use.

The device makes an exact duplication of another drive.