Wide Compatibility: This USB to USB extension for laptop is compatible with Windows 10, 8, 7, Vista, XP, Mac OSx 10.6, 10.12 or later, Linux 2.6.14 or later. We carry out 100% quality check and provide 1-year quality guarantee. If any query using our product, feel free to contact us by email on the manual. we’ll handle for you within 24 hours. Stable Multi Port Hub: With years of multiport USB splitter production experience, this 7 ports multi adapter weighs only 69g and the square shape can sit stably on desk or fixed on smooth surface. The LED is gradual soft and calm blue and unoffending. Powered USB to USB Plug: This USB port hub supports to run a 2TB hard drive without an extra power source. But with extra 5V DC charging port, this USB expander easily work with large capacity hard drive or high power USB devices if needed. 5V DC adapter is not included. SuperSpeed and Quick Response: This USB extender offers one USB 3.0 high speed port for data transfer up to 5Gbps. It can transfer a HD movie in seconds. Other 6 USB 2.0 ports can work with keyboard, mouse etc. devices quickly without lag. 7 Port Simultaneously: This USB hub instantly extends 7 USB ports at the same time, plug and play for your laptop, PC tower, gaming devices, flash drive, keyboard, mouse, card reader, hard drive, phone, projector, printer, camera, USB fan and more USB peripherals. It also replaces and protects your original limited USB port if you need to plug and unplug frequently.