Excessive data rate for USB 3

I have lying around 3 different adapters from USB to SATA.

The Good.
This works fine. The form I find awesome and the price OK. You can take a "rest" quasi plate in the place "book cover", close and voila man has a new USB 3 enabled disk. That worked, of course, with SSDs

The Test
I have the tool "h2testw" the Zeitschritf "ct" (just with heise online look) misused to write and read back a 60 GB file. The tool outputs a data rate for writing and reading back.
This test is limited as a benchmark. The disadvantage: the process takes place sequentially (ie to test the disks themselves not really suitable).

The Bad:
This adapter can not make it not (writing about 100MB and read) with others to keep up. A
For example, USB docks create with its own power supply (by BigTec or anchor) write rates of 140 MB / s and read speeds of 160 MB / s (and here it may be that my old SSD is already the limiting factor).

A "dedicated" USB 3 drive (WD Elements) managed more than 100MB / s (read and write).

Tip:
1. Who "quick" times will connect a 2.5-inch hard drive, is well served by the part.
2. Who "large amounts of data" from "bare" drives back and forth would like blades, for example, should the anchor USB 3 USB 3.0 & eSATA Anker® station HDD docking stations docking station for 2.5 / 3.5 inch HDD and SSD with USB 3.0 cable and eSATA Cable or BIGtec USB 3.0 SuperSpeed ​​up to 5Gbps dock QuickPort for 2.5 "/ 3.5" SATA S-ATA HDD hard drives with backup function letsBFI access (the latter has unfortunately the A / OFF button on the back - which I stupid think that's why I prefer the anchor variant).
3. For mobile application I can the WD Elements 1TB WD Elements Portable recommend external hard disk 1TB (6.4 cm (2.5 inches), USB 3.0) Black.

Alternatively Recommendation (more to tinker but with better and faster controller): ORICO 2588US3 USB 3.0 External Hard Drive Case for 9.5mm 7mm 2.5-inch SATA SSD HDD with USB3.0 cable Tool-free HDD installation

* I have repeated the test under a settlement and was afraid that the results changed (previously read 50MB / s and write). The cause unfortunately I could not identify. This test was repeated 3 times at different USB ports (1x on a USB Hub) - the result remained the same.

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