Identify component (diode?) based on photo
NOTE Looking at more pictures, this is definitely incorrect, but left here in case anyone finds a similar component :)

My best guess (not totally convinced) is it's an ST USBLC6-2SC6 low capacitance ESD protection device.



Reasoning:


Near the USB connector, so probably a transient protector (as per comments)
Marking is almost correct (from datasheet, it should be 62SC6, but it may be truncated)
Pin 2 looks like it's connected to ground, pin 5 looks to be going (a long way!) to a decoupling cap.


My only doubt is the D- pins (3, 4) do not appear to be connected in that picture, but the vias may be hidden.