Instantly add four USB 3. 0 Ports to iMac, MacBook, Mac Pro/ Mini, surface Pro, XPS, notebook PC, mobile HDD,easily connect mouse, keyboard, camera, USB flash drive, printer and more. Supports Transfer Speeds up to 5Gbps (USB 3. 0), fast enough to transfer an HD movie in seconds.Backwards compatible USB 2. 0 (480Mbps), USB 1. 1(12Mbps). Note: This hub support output max current up to 900mA. So some HDDs that need current more than 900mA need extal power adapter. Plug and Play, compatible with Windows 10/8/8. 1/7/ Vista/ XP and Mac OS X, Linux and chrome OS.With Micro USB Power Charge Port to avoid the power short if you connect the device which has big power. Portable size design allows you to take it on the go, connect with your laptop and access to your USB devices anytime.