The Rocstor Premier Micro USB On-The-Go (OTG) Adapter Cable convertor provides a Micro USB male (B-type) connector and a USB female (A-type) connector. This adapter enables an easy way to convert a Micro USB OTG device to connect o a USB OTG (On-the-go) host device such as a Computer, Smartphone, Cellular Phone, Keyboard, or Digital Text Reader. etc. The Rocstor Premier adapters are designed and constructed for extreme reliability and durability. With it's Copper Plated conductors, it provides the best fit and dependable, long-lasting connections. Note: This adapter will only work with devices that support USB OTG. We advise for you to read your host computer manual and review your documentation of your device to ensure that your device supports USB OTG compatibility. Purchase with confidence and rely on Rocstor protection of Lifetime Limited Hardware Warranty.