Not all USB mice will work with an adapter. If it did not originally ship with an adapter, that you lost and are now replacing, then odds are it will not work. A USB hub adding more USB ports may be a better solution.
iPads do have usb ports. You just have to buy an adapter
Have a PS3 that came with 4 USB Ports
Get a PS2 to USB adapter. They are really cheap.
It will only work on the Early PS3 models with 4 USB ports and not on the Models with only 2 USB ports see related links
Only the PS3 models with 4 USB ports play PS2 games
What you really are asking is whether the PS2 game CD will work in the PS3. The only PS3 models that play PS2 games are those with 4 USB ports, Newer PS3 models with only 2 USB ports will not play PS2 games.
Yes, the USB PS2 to PS3 Controller Converter Adapter Cable can be purchased in white.
The only parallel to USB adapter I've seen is one which allows you to hook up a parallel printer to a USB port on the computer. You could not use that manner to create USB ports.
It will only work on the early PS3 with 4 USB ports and not on all the rest.
You cannot use one directly. It is, however, possible purchase a PS2 to USB adapter and plug up to 2 into your PS3's USB ports. You will not have sixaxis or the PS button, but everything else should work.
It is used to support steering wheel controllers.