Sonnet launches new four-port USB-C PCI-e expansion card for Mac Pro tower

Sonnet on Wednesday rolled out two adapter cards, the Allegro USB-C 4-Port PCIe and the Allegro Pro USB 3.1 PCIe, both of which can add powered USB ports to any computer with a PCIe slot, or even Thunderbolt Macs when used in a Thunderbolt-to-PCIe enclosure.