USB 3.1 Type-C PCIe x1

HP 821128-001 USB 3.1 Type-C PCIe x1 card is an expansion card for adding USB Type-C connectivity to a computer with a compatible PCIe x1 slot.

Its listed interface is PCIe x1, and it provides a USB 3.1 Type-C connection. This makes it a practical option when a system needs this port type through an internal expansion card. The listing identifies the item as a card kit; it does not specify additional technical details or included components.