... ,supports USB2.0/1.1, 3,No driver required,plug and play,support hot swapping; Item NO: MDTC-E006 4 ports ... swapping; Built-in overcurrent short circuit protection setting, protect your computer and device from damaging. Internal USB line LED will flash to ... indicate the operation statusStandardsFCC, CE and RoHSMaterialplasticColorall kinds of colors,even you can show us the ...