Feature: 1. Stable performance, low power consumption, no noise, USB2.0 interface balanced transmission, safe and stable 2. Stable charging, support for charging connected devices, charging efficiency is higher than ordinary USB HUB 3. Small and portable, designed for desktop computers, notebooks, ultrabooks and tablets 4. Safe and reliable, unique voltage and current overload protection, effective protection of HUB and connected equipment 5. Up to seven independent devices can be operated at the same time, supporting for Windows Vista/ Windows XP/ Me/ 2000/ 98 ect. Specification: Item Type: USB Seven-Port Hub Material: ABS Transmission Rate: 480 Mbps Standard: USB2.0 Port: 7 USB Ports Output Current: 400mA Adapter Interface: 5.5 mm System Support: Not Applicable for OS X Output DC 5V---1A. Package List: 1 x USB Seven‑Port Hub1 x Power Cord1 x Bracket1 x USB Cable