Bests & Worsts Reviews from Amazon

I love Amazon and hate to one star one of their products, but I have encountered a serious issue with this USB hub. When attached to Western Digital 3TB Passport Portable USB drives, during spinup after the drive was asleep, it appears to throw CRC errors. These errors have the potential to corrupt your hard disk data. Linux Kernel- 4.10.16-200.fc25.x86_64 ... May 25 22:09:21 media kernel: sd 4:0:0:0: [sdd] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE May 25 22:09:21 media kernel: sd 4:0:0:0: [sdd] tag#0 Sense Key : Aborted Command [current] May 25 22:09:21 media kernel: sd 4:0:0:0: [sdd] tag#0 Add. Sense: Information unit iuCRC error detected ... It threw these errors for all four drives attached at the same time, on multiple occasions. I run ZFS and once this happens, the pool gets corrupted and needs a scrub. Pending I/O to the pool hangs until the drives are reset. Yes, I was using the included 5V adaptor in both cases. Yes, after it happened the first time, I swapped in a second Amazon Hub that I had, and it happened there as well. The CRC error has never happened before with other hubs, and it hasn't happen since I stopped using the Amazon hub. The reason why I switched to this hub was to get better performance out of my USB drives. I was getting in the 50MB/sec read range before using this hub, and using this hub I was getting >200MB/sec across the four drives. A great improvement showing how this hub does out perform other USB 3.0 hubs. Unfortunately, the idea of data being corrupted is unacceptable, and I am now looking at other options. It is possible if your drives never go to sleep that you will not hit this issue. It is also possible that this issue is a strange interaction of the hardware I am using, the drives I am using, and the hub, and does not happen in other combinations. I posted this review because I run ZFS and do frequent backups and was able to catch the corruption without any data loss. Others may not be so lucky, so I wanted to share my experience as a cautionary tale.