Function: USB 2.0 Male is for all USB Devices; USB 2.0 Female, one is JUST for Power Charging ( CANNOT charge IOS devices ), the other one is for Data Transfer&Power Charging ( Support ALL devices ).
Connectors: USB 2.0 Type A Male + Power USB 2.0 Type A Female + Data/Power USB 2.0 Type A Female
Attention: JUST for Power Charging means it cannot transfer data, so it CANNOT be connected with mouse or keyboard.