4 Ports USB 2.0 hubs with USB power adapter. Charge ... USB adapter. OverviewA design of four ports USB HUB that enables your desktop or notebook computer to ... , fashionable design, legerity convenient to carry, USB 2.0 version specification, high speed transmission may up to 480Mbps, ... equipment from destruction ; Uses second generation of USB HUB controller, work without driver, easy plug and play.30 ...