This is the Right-side daughter I/O circuit board with USB port and Audio port for the Dell Inspiron 5390 5391 7391 / Latitude 3301 laptops.
Compatible Dell Laptops:
-Inspiron 5390
-Inspiron 5391
-Inspiron 7391
-Latitude 3301
-Vostro 13 (5390)
Dell Part Number: 536CD