Portable Usb-A Expansion Hub For Laptop Or Desktop Computers - Usb 3.2 Gen 1 (5Gbps) 4-Port Usb-A Hub Bus-Powered Dongle W/4.5W Of Bus Power Dynamically Shared Between 4 Downstream Ports With Max 4.5W Per Port Over Current Protection (Ocp) Wake-On-Usb - Optional Auxiliary Micro Usb Power Input (Cable Sold Separately) Adds 4.5W Of Power For Applications Requiring Additional Power - Windows/Macos/Linux/Chromeos - Extra-Long 1Ft/30Cm Built-In Host Cable - Usb Event Monitoring App