This part is a kind of semiconductor called GL3520.

Function of this product has USB 3.0 Hub Controller.

Manufacturers : Genesys Logic

Image and pinout :

Some of the text within the PDF file :

Genesys Logic, Inc. GL3520 USB 3.0 Hub Controller Datasheet Revision 1.32 Jul. 15, 2011 GL3520 Datasheet Copyright Copyright © 2011 Genesys Logic, Inc. All rights reserved. No part of the materials shall be reproduced in any form or by any means without prior written consent of Genesys Logic, Inc. Ownership and Title Genesys Logic, Inc. owns and retains of its right, title and interest in and to all materials provided herein. Genesys Logic, Inc. reserves all rights, including, but not limited to, all patent rights, trademarks, copyrights and any other propriety rights. No license is granted hereunder. Disclaimer All Materials are provided “as is”. Genesys Logic, Inc. makes no warranties, express, implied or otherwise, regarding their accuracy, merchantability, fitness for any pa [ ... ]

GL3520 PDF Datasheet Download