This part is a kind of semiconductor called SPIF215A.

Function of this product has USB to Serial AYA Bridge.

Manufacturers : Sunplus

Image and pinout :

Some of the text within the PDF file :

SPIF215A USB to Serial-ATA Bridge Preliminary APR. 26, 2006 Version 1.1 Sunplus Technology reserves the right to change this documentation without prior notice. Information provided by Sunplus Technology is believed to be accurate and reliable. However, Sunplus Technology makes no warranty for any errors which may appear in this document. Contact Sunplus Technology to No responsibility is assumed by Sunplus Technology for any infringement of patent obtain the latest version of device specifications before placing your order. or other rights of third parties which may result from its use. In addition, Sunplus products are not authorized for use as critical components in life support devices/ systems or aviation devices/systems, where a malfunction or failure of the p [ ... ]

SPIF215A PDF Datasheet Download