This part is a kind of semiconductor called UPD720200.

Function of this product has USB 3.0 Host Controller.

Manufacturers : NEC

Image and pinout :

Some of the text within the PDF file :

www.DataSheet.co.kr PRELIMINARY DATA SHEET MOS INTEGRATED CIRCUIT PD720200 USB 3.0 HOST CONTROLLER The PD720200 is the Universal Serial Bus 3.0 host controller, which complies with Universal Serial Bus 3.0 Specification, and Intel’s eXtensible Host Controller Interface (xHCI). The PD720200 has PCI Express® bus interface, and it is applicable for PCI Express solution for host PC system. The PD720200 works up to 5 Gbps for data transfer when connecting to USB 3.0 compliant peripherals, while maintaining compatibility with existing USB peripheral devices. Detailed function descriptions are provided in the following user’s manual. Be sure to read the manual before designing. PD720200 User’s Manual : TBD FEATURES  Compliant with Universal Serial Bus 3.0 specifica [ ... ]

UPD720200 PDF Datasheet Download