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Positive negative U plate / Positive negative U plate

Positive negative U plate
Positive negative U plate

1. To make the users get rid of the trouble on identifying the upper side from the lower side of the USB connector.
2. The upper and lower sides of the USB connector can be obviously distinguished from each other.
3. To make the connector unique from those with normal design.
4. It can be promised that there will be no influence on the connector.


Chengdu University of Technology

Chengdu University of Technology
ChengDu, China

Gen Li,
Chengdu University of Technology