1.Industrial grade 20 ports charge and data syncs transfer USB hub,support 20pcs devices connection at the same time.Plug and play. 2.Support USB 2.0 data syncs transfer rate up to 480Mbps. Support high power mobile terminals' data transfer.Apply to smart phones,tablets,the computer with software to control each ports' devices,tablet flashing,refurbishment,3G modem 3.External 12V10A power adapter,the output of each port reach 5V 1200mA,charging for mobile phone tablets laptops etc. 4.It’s made of aluminum alloy case,with mounting bracket,fast heat dissipation and high temperature resistance.LED indicator lights,On/Off switch,over current protection,Over-voltage,Short circuit protection,CE, FCC, ROHS approval.