at alternate the reading rate is 70 MB / sec and write specified with 20 MB / sec! a test copy with a 11GB file (from a 450MB / sec SSD) I reached dreamlike 24.4 MB / sec ... what then USB 3.0? When copying (reading) from USB to SSD I have not even given 70 mb / sec but hungry reached 33.3 mb / sec. This is unacceptable in the price range.