4 Port USB 1.1 High-Speed Mini Hub Socket Pattern for Laptop PC Product type: USB Hubs System Requirements: Windows XP/ME/2000/98SE/98/VISTA/MAC OS 10.2/MAC OS 9.1 Cable Length: Approx.43cm Unit Size: Approx.10*3.5*1.8cm (L*W*H) Color: Black Charge and sync your iPod shuffle Top load USB port for easy access 4 port high-speed USB HUB Supports up to 127 Hi-Speed devices Port Over current protection Compatible with USB-1 and USB-2 Friendly and ergonomic design Fully compliant with USB 1.1 specification Backward compatible with USB1.1 The maximum data transfer rate is 480mbps Connects up to 2 devices without a power adapter Overcurrent protection for individual port Plug and play No driver installation required Indicator light status Compact and essential for PC users