Several arduinos on a single USB port (power + communication) - IDE 1.x - Arduino Forum
Maximizing Hi-Speed USB (USB 2.0) Why you need USB 2.0 now and how to retrofit it to your system for maximum utility and ease of use | Maximizing Hi-Speed USB (USB 2.0)
What is Powered USB Hub? – Zendure
Would this wiring work for a USB splitter? | BitBuilt - Giving Life to Old Consoles
kvm switch - A USB hub will not function when it's connected more than 5 hubs away from the root port - Super User