This product is with USB OTG and MHL function for mobile phone designCan make your Samsung smartphone into a little computerYou can charge the phone， and also you can answer the phone， listen to music， playing games in the cradleSmall adapter to your Smart phone video， picture output to HD TVs， Monitor， Projectors playRead anywhere at any time of USB flash disk， SD/Micro SD (TF) memory cardsVideo， images， and on the document copying， delete operationMicro-11p USB Connector suitable for Samsung galaxy S3/S4/Note 2/Note 3Support read/write SD/SDHC/MICROSD (T FLASH) memory cards3-Port USB HUB: Suppor USB 2.0 host to connect USB disk， mouse， key board， etcSupport MHL to HDMI output to HDTVSupport Max resolution to 1080p and all bandwidth between 25-75MHzSupport 8 channel (e.g. 7.1 surround sound) uncompressed audioSuppors High-bandwidth Digital Content Protection (HDCP)Support audio transfer up to 192kHzSize: (10.5 x 8 x 2.8)cm (L x W x H)