Walt - your post contains considerable misinformation… Please try to research subjects thoroughly before posting
A non powered hub is really a USB 1.1 hub. It draws its power from the PC and doesn’t send any power out to devices attached to it.
WRONG! The distinction between USB v1.1 or v2.0 has NOTHING to do with being powered, or not. It’a all about speed. USB v1.1 allowed a maximum transfer rate of 12Mbits/second, and USB 2.0 increased this to a maximum of 480Mb/s.
There’s obviously an error is the statement “doesn’t send any power out to devices attached to it.” ALL USB hubs must send some power to a connected USB device, or the device cannot work! An unpowered hub has a “power budget” which in total cannot exceed a certain level, dictated by the USB standard. Powered hubs have a higher power budget, basically. Some devices require more power than others and this is where the distinction between powered and unpowered is important. Furthermore, some USB ports (laptops especially) are not fully compliant with the standard and this can cause problems with “high power” devices.
<snip>Powered or USB 2 hubs take two forms <snip>
Again, “Powered” and “USB 2.0” are not synonymous.
There’s a pretty decent write up in this Wiki article, check it out