UGREEN Micro USB 3.0 Hub Adapter OTG USB Hub 4 Port for OTG Android Tablet and Phone, Macbook Air, Surface, Ultrabook and More PC (Black) UGREEN Micro USB 3.0 Hub offers a data transfer solution for your OTG-enabled tablets and mobile phones, making them working as a host. OTG provides data sync and handy control on supporting devices by attaching flash drive, mouse, keyboard, game controller etc. NOTE: Micro USB OTG Adapter can ONLY work for devices with OTG function. 4-Port USB 3.0 Hub simply helps you to connect up to 4 USB A devices to your PC or laptop, such as external hard drive, USB flash drive, mouse, keyboard, USB headphone, speaker, memory card, keyboard, mouse and more USB A devices. Compatible with Windows 10/8/8.1/7 / Vista / XP, Mac OS X, Linux, Chrome OS laptop and PC. Micro USB 3.0 connector works for OTG-enabled mobiles and tablets with micro usb 3.0 interface such as Samsung Galaxy S5, Note3, Nokia 2520 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 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.