So, your claim of … and the speed of writing to disk exceeds 80 MB/s without any problem is totally a bogus and misleading. AFAIK, a USB2 specification clearly says its read (probably slower in write) performance is @480 Mbps (no more than 60 MBps). In reality, I would be surprised if anyone can get even beyond 35 MBps write performance. Thus, prompted me to ask how you achieve such an 80 MBps write performance.