USB Port power requirements
I read an article that said that USB connections have power limitations. I do understand that external USB hubs sometimes required their own power supply.
My question is what happens with USB PCI or PCIe cards in terms of how many ports can be supported.
I am seeing four-port USB 3.0 PCIe cards being offered for sale but I wonder if they need an additional Molex connection. If I recall, a two port USB card is more reliable than a four-port USB card; correct me if I am wrong.