Sonnet Technologies ( has released two new four-port, dual-controller SuperSpeed USB 10Gbps PCIe adapter cards: the Allegro Pro USB 3.1 PCIe and Allegro USB-C 4-Port PCIe. Each costs $149.

They add four powered USB-A or USB-C ports, respectively, to any Mac, Windows, or Linux computer with PCI Express (PCIe) slots, and to Mac and Windows computers with Thunderbolt ports when installed in a Thunderbolt-to-PCI Express card expansion chassis.

Both Sonnet adapter cards feature dual USB 3.1 Gen 2 controllers and support the fastest SSD-based USB drives available with file transfer speeds up to 800 MB/s from a single drive, and up to 1,200 MB/s aggregate from four drives. Both cards support USB bus-powered SSD, SSD RAID, and hard drive devices with up to 7.5 watts of power per port, without the user having to connect auxiliary power to the card or AC power adapters to the devices. Hubs and other USB-IF-compliant devices are also supported.