1.Self-powered for USB cameras‚ printers‚ webcams‚ keyboard/mouse ect .
2.Additional power DC-Jack is designed for devices which need much power Such as USB HDD and High power wifi networking device ‚ect .
3.LED indicator desgined for easy status monitoring
4.Win98/98SE/2000/ME/XP/Vista Mac OS 8.6 or Later
