USB hub 1.5 years warranty 2.certification:CE,FCC,ROHS 3.Competitive price and good quality main ... features and specifications 1.4 ports usb hub ,unipue design 2 ... with USB1.1.7.Applications:suitable for USB disk, USB mouse, USB keyboard, USB printer, digital camera, mobile storages, ... Other : By sea , by air OEM usb 4ports hub,high quality with competitive price