【Multi Usb Port】This USB hub can easily expand one USB port of the computer to four ports, support four ports to work at the same time, without any pressure, and keep the temperature in the middle range. Plug and play, no driver required, easy to useNote: This hub is not suitable for charging devices as its maximum output current is only 900mA, resulting in very slow charging speeds. Therefore, it is recommended to use it solely for data transfer and peripheral connections to ensure optimal performance.【Wide Compatibility&Appliaction】This usb hub for laptop is compatible with Windows 10/8/8.1/7 / Vista / XP and Mac OS X, Linux, and Chrome OS. 4-port USB expander applies to various devices: laptop, pc tower, XBOX, PS4, flash drive, printer, mouse, card reader, HDD, cellphone OTG adapter, keyboard, camera, console, USB fan and USB cables【High-Speed Data Hub】Supports Transfer Speeds up to 5Gbps (USB 3.0), 480Mbps (USB 2.0), and 12Mbps (USB 1.1). Note: This hub support output max current up to 900mA.So some HDDs that need a current of more than 900mA need an external power adapter【Hassle-free Service 】Our Team Has Professional Technical Team And Great Customer Service.24-Hour Online Customer Service. If there is any problem with the product， Please Feel Free To Contact Us And We Will Do Our Best To Solve Your Problem