I purchased this card by mistake (really needed a card with Internal usb header)The card performs at full 3.2 2x2 usb speeds,.With Windows it's a plug and play / Info & Drivers
StarTech PEXUSB321C 1-Port USB 3.2 Gen 2x2 PCIe Card - USB-C SuperSpeed 20Gbps
Enhance your computer's connectivity with the StarTech.com 1-Port USB 3.2 Gen 2x2 PCIe Card, offering a USB-C SuperSpeed interface with a stunning 20Gbps transfer rate. This modern card, designed for seamless integration into your PCIe slot, delivers rapid data transmission and device plug-and-play capabilities.
1-Port USB 3.2 Gen 2x2 PCIe Card, USB-C 20Gbps SuperSpeed PCI Express 3.0 x4 Controller Card, USB Type-C Adapter Card, Data Only, Windows/macOS/Linux, TAAUSB 3.2 Gen 2x2 (20 Gbps) | PCI-Express 3.0 | PCIe x4 Slot | USB Type-C
Product ID: PEXUSB321C
HIGH PERFORMANCE: Add 1x USB-C SuperSpeed 20Gbps port to your desktop PC with this USB 3.2 Gen 2x2 PCIe Card;
Expansion card provides up to 15W (5V @ 3A) to power & charge devices
FULL USB 3.2 GEN 2X2 SPEEDS: Featuring the ASMedia ASM3242 host controller using x4 lanes of PCIe 3.0, this card is fully capable of speeds up to 20Gbps enabling fast access to high-performance devices like NVMe drives and SSDs
MAXIMIZED USB PERFORMANCE: USB Type-C PCI Express card supports Multiple INs to reduce bandwidth loss when mix speed devices are connected to a Hub (hub must also support this feature);UASP support improves performance with storage devicesCOMPATIBILITY: Add-on card installs in full or low-profile (bracket incl) PCIe 3.0 x4 slot (Backward compatible w/PCIe 2.0); Windows/Linux/macOS w/auto drivers Win 8 & up; Works w/USB 3.2 Gen 2/3.0/2.0 devices