什麼是USB type-c

http://benevo.pixnet.net/blog/post/50064788-usb-c-%E5%8F%AF%E4%BB%A5%E6%AD%A3%E5%8F%8D%E6%8F%92%E3%80%81%E4%BE%9B%E9%9B%BB%E6%9B%B4%E5%BC%B7%E3%80%81%E6%95%88%E8%83%BD%26%E5%8A%9F%E8%83%BD%E6%9B%B4%E5%A5%BD