rgrele wrote:I assume that when connected to a PC with an older 1.0 version, the speed is not "upgraded" to 2.0? Correct?
the speed defaults to the lowest standard that any of the items in the line can support. So if you have a USB1.0 or 1.1 device, a USB2.0 hub, and a computer capable of of USB2.0, it will only do USB1 specs (either Low speed, which is 1.5mbits/s or full speed which is 12mbits/s, depending on conditions and such as well). Say you have a USB2 device, USB2 hub, and USB1 computer, same as before it will drop to the fastest that all of the devices can support, being the USB1 low or fullspeed specs.
One of the misleading things about USB2.0, is most people think that USB2.0 means the device does Hi Speed rates (480mbit/s), where as in reality thats not fully true. It just means that if it follows the USB2.0 specs, it might peak at 480mbit/s. There are a quite a few USB2.0 devices out there (especially mice and such), that will only do the low speed rate. USB2.0 is just a spec for how things can be done, not how it is done, or how fast it can be. About the only things anymore that really effectively use USB2.0 Hi Speed specs is DV Cameras (but not most digital cameras, just the digital video cameras), hard drives, some networking components, and occaisionally scanners and such. Unless you're using a external hard drive, or video editing, USB1.1 or 1.0 probably will be fine.