4 Port USB 2.0 Self Powered Hub Port Type: EHCI compliant USB 2.0 Connectiors: 4 Type A USB 4 pin female for connecting peripherals, 1 Type B USB 4 pin female for connection to host PC Regulatory approval: FCC Class B System requirements: Any computer with a USB 2.0 port Package includes: USB 2.0 Hub, Power Adapter(5 volt DC 2.5mA + centre), 1 USB Cable (A - B), Instruction manual