The initiative to unite USB and SCSI interfaces is not new: the solution is known as UAS (USB Attached SCSI) and is found in the list of controllers features . UAS is designed to address the USB-drives (hard drives, in particular) is associated with inefficient use of interface features, and increase their speed.
Associate noted all the key features of UAS protocol, and studied on the example of motherboard ASUS P8Z77V with USB 3.0 Asmedia 1042 controller. The study involved three drives that are connected through a docking station with USB 3.0 support. Were tested: SSD Corsair Force 3 60GB and Western Digital hard drive line Velociraptor 1TB capacity (VC) and a similar capacity Caviar Green (CG).
As an alternative solution to support UAS Asmedia made IntelController , built-in chipset Z77.
Note that in the synthetic tests, the speed gain from UAS does not look impressive, but the most significant increase seen in the benchmark CrystalDiskmark when working with random data blocks of 4 KB and a queue depth of 32: