The Micro Connector is smaller and thinner than the 5-pin mini USB connector.
These Micro USB Cables are USB 2.0 Hi-Speed compliant and are backwards compatible with USB 1.0 and 1.1. The type A male end plugs into your computer, laptop or wall charger and the micro type B male 5-pin connector plugs into your mobile device. The contacts in the connectors are gold plated to prevent corrosion.
The USB Micro B 5-pin connection is now the most commonly used connection on cell phones, GPS units, Tablets and other mobile devices.