【Product Features】 1. Provide 4/7 USB ports, 2. 3.0 HUB 3. Built-in current overload short circuit protection device; 4. The computer automatically recognizes and installs, no need for drivers, plug and play, plug and unplug; 5. Support: windows95/98/ME/2000/XP/Vista, Mac 8.6 or later 6. Working humidity: 10% - 90% 7. Working voltage: 5V Working current: 500mA 8. Working temperature: -20C - 75C 9. Storage temperature: -40C - 85C 【Product Specifications】 Manufacture Country: China Name: USB4/7 port HUB splitter Function: USB device connection Features: Support 7 ports to drive at the same time Line length: 100cm Colour: Black Size: 7 ports: 171*46*21mm, 4 ports: 105*46*21mm 【Package Included】 1 x USB Hub Note: ① Due to manual measurements and slight color variations, please allow 1-3 cm (0.4-1.18 inches) difference to suit different display settings. ② Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.