I'm losing my mind. My setup is a new Mac Pro. I had two Startech USB3.0 UASP dual bays. Four drives plugged into them. I also recently got a Mediasonic USB3 UASP enclosure, for portable use. I noticed one of my drives was disconnecting and/or getting total read/write failure through the Startech. I checked SMART status, drive is healthy. Switched it to the Mediasonic, things work great, I decide to replace my Startech bays with four Mediasonic enclosures. Now I'm getting I/O errors in console with one of my drives. Also I realized SMART status doesn't work with these enclosures, and my startup time with the enclosures plugged in is SO long now [that, or if I plug my drive in after the computer starts up, it takes ~5 min to show up on my desktop' Obviously I can't test my drives by directly connecting them, since there's no SATA bays in the nMP.... Are USB3.0 enclosures/bays this unreliable??? I'm happy to shell out $600 for an OWC Thunderbay or something, if it'll be reliable.