Features: 100% brand new and high quality Bulit in V817 chip, spport multiple devices expansion, high load for long time data transmit. Equipped with 12V 2A(7 Ports) and 12V 4A(10 Ports)high power supply. Independent switch design of the interface, better usability.When the hub is connected to the computer, the blue indicator light is always on. Plug and plug, drive free compatible with Windows, OS and Linux. USb3.0 high speed data transfermation,compatible with multiple devices. Package Includes: 1 x USB Hub (7 Ports/10 Ports Optional) 1 x Usb Cable Specifications: Brand:BLUEENDLESS Item: Usb Hub Size: approx 228x56mm/8.97x2.2in (10 Ports)/ 168x56mm/6.6x2.2in (7 Ports) Power:12V 2A(7 Ports) / 12V 4A(10 Ports) Material:Aluminum Alloy+ABS Input interface: Micro-B Output interface: USB 3.0 Cable Length:1M/3.28ft note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Blueendless HUB is not a charger.It is used for data transmission.If the HUB support the charging function, we will introduce it on the product details.