i have problem with random disconnecting(disconnect and connect again - LJ blink and Windows makes "USB connect" sound) of U6. Sometimes once per hour and sometimes once per a day. LJ is connected with "first-class" 1m USB cable (i tried different cablest too) and it is closed in metal enclosure.
I tried solder SMD capacity (47uF, 35V - from drawer) beween VUSB and GND (C93? - not readable) and it seems solved. On the board are another free component places.
Please, do you have a some ideas where add components for better stability?