USB HUB 4 PORT 3.0 SPEED ITEKPROD-USA Blue LED indicator with ON-OFF switch lets you know when the hub is operational; USB-powered design eliminates the need for an external power source; Data transfer speeds up to 3 Gbps Allow you to quickly upload and download photos, videos, music and other files. Mac system requirements OS X v10.4 or higher; available USB port; PC system requirements Windows XP, Vista, 7, 8, 10; available USB port;