Different kinds of USB socket Inspection:
Direct connection
Push button switch
Automatically on and off

USB socket inspection
Some common factors for USB socket quality control:
Quantity check 
Measurement(weight& size)
Smell test
Basic function test
Power supply test
Rated trip current test
Trip time test
Hi-pot test
Internal test
3M tape test for Logo
Barcode scanning
Carton dropping test

USB socket quality control


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