dead usb ports - several bad boards ???

[Phoenix Box Mods]

 

So today another one - ive had a run of bad usb ports in the past month 

total now is 4 

will not connect to escribe issues - no charge issue - 

the boards dont seems to be from any special build time from jan - nov 

to be out 4 boards for warranty in the past month is not normal. 

anyone else having issues ?? i set lipos at 2.0 amp charge limit in device monitor idk whats going on