4 Ports USB 2.0 hubs with USB power adapter. Charge and connect any USB device. Powered by computer USB port or USB adapter. OverviewA design of four ports USB HUB that enables your desktop or notebook computer to connect to any other USB devices. High quality, fashionable design, legerity convenient to carry, USB 2.0 version specification, high speed transmission may up to 480Mbps, can make the ...