The ICY BOX IB-120STU3 is the 2nd dock that I have bought myself because it supports USB 3.0, and the data transfer so much more quickly proceeds.
I was able to test the meantime several 2.5 and 3.5 inch hard disks and SSDs. All have been correctly identified and also access to the SMART data was not a problem.
Reference should also be pointed out that fit into both shafts both 3.5 inch and 2.5-inch hard drives, which means you can also operate 2 x 3.5 inches or 2 x 2.5-inch hard drives.
The case is solid. On the back is next to the network and USB connection a on / off switch.