... powered by external power supply.Fully compliant with USB 2.0 specification.4 ports High Speed USB 2.0 portsUp to 480 Mbps data transfer rate.Backwards ... systems are suitable, except Apple notebooksPackage Content:1X New USB 2.0 High Speed 4-Port HUB For Laptop PC 1).Products Range:Wide ... will be delivered with 2-4days by DHL, UPS, TNT, EMS, or By Air8). Warranty:We provide full after-sales service to ...