The readers, storage drives, and hubs leverage USB 3.0 technology for high-speed performance, while the Professional Workflow HR2 hub is also designed to deliver next-generation Thunderbolt™ 2 speeds. Thunderbolt 2 technology gives photographers and videographers the power to quickly transfer 4K video and other large media files, at up to twice the speed of Thunderbolt and up to 4x the speed of USB 3.0 devices.1 The Professional Workflow HR2 hub is also backwards compatible with Thunderbolt and USB 2.0 (at slower speeds), while using the same cables and connectors.