Review on 🔌 Allegro USB 3.0 PCIe 4-Port - Enhanced Compatibility for Mac and Windows by Mark Fleming

Works! Outstanding throughput. (Tested with Blackmagic Designs Hard Drive Tester on all my devices.) Mac OS High Sierra. I had a USB 3.0 4 port that didn't work for me (Inateck) as did the previous reviewer. Ports stopped working AND caused some conflicts on native USB ports like external devices (SD, portable drives, etc.) preventing them from being mounted. Very pleased and relieved that Sonnet was easy to install. It fits snugly into the PCI-E slots and the connector wire is better aligned than the previous card. I was able to fully connect the Lexar UHS-II SD card reader (250 MB/s). I put it in slot 4 so it wouldn't block the GPU fan and get in the way of the full size hard drive mounted on a rack above. At the moment I cannot confirm the reliability. Installed yesterday.