This mini USB hub has 4 USB 2.0 ports each with a max total transmission speed up to 480 MBps. All four ports are powered thru the USB micro-B cable. there is also just one on-off switch that controls the 4 USB https://jasperaxkp036809.ka-blogs.com/83684463/the-greatest-guide-to-iogear-2-port-usb-2-0-automatic-printer-switch