Allows connecting two standard USB peripherals to Micro-USB OTG smartphones and tablets Micro-USB port enables providing extra power to connected OTG devices Built-in Micro-USB male connection cable No external power supply required for most OTG devices Specifications Material: plastic Supports: Samsung Galaxy S2, Galaxy Note, Galaxy S3/S4/S5, Galaxy Tab3 8.0; Sony Xperia NX-02D, Xperia Acro HDIS12S; Toshiba REGZA Phone-T01D, Sony S-series Tablet etc. Built-in micro USB cable: 13 cm Dimensions: 55 x 25 x 12 mm Net weight: 13 g System requirements Smartphone of tablet with OTG Micro-USB port For connected devices that require more power, an extra micro USB 5V power supply is required