The UUSBMUSBMF is micro USB to mini USB 2.0 adapter features a micro USB male (B-type) connector and a mini USB female connector - a cost-effective and convenient solution that lets you use older mini USB cables to sync and charge newer micro USB devices such as BlackBerry® or Android-based cell phones. Providing both versatility and durability, the micro USB to mini USB adapter saves you from having to carry multiple cables to accommodate different types of USB device connection (micro USB/mini USB), and is backed by StarTech.com's lifetime warranty.