OWC ENVOY PRO FX Review Share this article The OWC Envoy Pro FX is a portable SSD that OWC claims is the first universal Thunderbolt drive to work via USB-C and USB-A. This allows you to plug it into older equipped Thunderbolt and USB equipped Macs and PCs and future machines that have Thunderbolt 4 and USB4. Key features Flexible compatibility: Plug and play with yesterday’s, today’s, and tomorrow’s Macs; Windows and Linux PCs; and iPad Pro, Chromebook, and Surface devices. Extremely fast: supports the max performance capability of any Thunderbolt and USB interface up to 2800MB/s