Sonnet Technologies today announced the Allegro Pro USB 3.0 PCIe, a four-port, four-controller SuperSpeed USB 3.0 PCI Express 2.0 adapter card with charging capabilities. The Allegro card provides users a simple way to add four USB 3.0 ports, each providing full 5Gbps bandwidth, to Mac Pro and Windows computers with PCIe slots, and to Thunderbolt-to-PCI Express card expansion chassis.