What does an orange USB port mean? I found out the surprising truth about all the colors

Yellow: These ports can support either USB 2.0 or 3.0, and are "always on", meaning they can supply power even when the device they're connected to is off. Orange: Like yellow, but with support for ...
XDA Developers on MSN

Please stop treating your USB hubs as port replicators

USB hubs are great ways to add more ports to a computer, but if you think they're just as good as having those ports built in ...