UGREEN USB 3.0 Hub Micro USB OTG Adapter with 4 USB Ports Compatible for Macbook air, Surface Laptop, OTG Enabled Android Cell Phone and Tablet (White) UGREEN Micro USB Hub offers a data transfer solution for your OTG-enabled tablets and mobile phones, making them working as a host to connect keyboard, mouse, game controller, flash drive, USB card reader and more. NOTE: Micro USB OTG Adapter can ONLY work for devices with OTG function. Please kindly check your phone and tablet specs before trying its OTG use. This 4-Port USB 3.0 Hub simply helps you to connect up to 4 USB A devices to your PC or laptop, easily extending 1 USB port to 4. Support super fast data transfer speed up to 5Gbps: 10 times faster than USB 2.0, backwards compatible with USB 2.0 and 1.1. Compatible with Windows 10/8/8.1/7 / Vista / XP, Mac OS X, Linux, Chrome OS laptop and PC. Micro USB 2.0 connector works for OTG-enabled mobiles and tablets such as Samsung S7 S6 Edge S4 S3 or Note series, Google Nexus 4/5/7, LG G2/G3 etc. Plug & play, no driver needed. With 3.5mm x 1.35mm DC-Jack, if you connect high power consumption devices (more than 900 milliamps) HDD, power supply can be connected to offer extra power (power adapter is not included). Please kindly note: this product ONLY works with DC 5V (Center Positive Polarity) adapter for power supply. Through the LED indicator, you can easily monitor the connection status. Built-in 3FT cable can extend the hard-to-reach USB ports on your desktop to your desired location, which making it a nice choice for desktop.