20 Port USB Hub/usb2.0 HUB Industrial Grade USB HUB High Performance and Stability 20 ports USB2.0 HUB Transmission Rate: USB2.0 standard 480Mbp/s Power supply Input: 100-240V AC, 50/60Hz, 1.5A(Plug Type: AU/EU/US, will send correct type according to your shipping address) Industrial top quality, Best Performance and stability. Dimension: 180mm*130mm*33mm