I'm having some USB power problems with my iMac 20" (late 2006)
So to start, my iMac has 3x USB 2.0 ports of which:
I havent experienced problems in the past. I can plug in two iPods into both the docks and not experience problems but the problem comes in when I plugged a 2.5" external HDD into the USB extension. The problem was that I couldn't use the mouse. I had full keyboard control and the mouses' optical light was still on. It was just unresponsive on screen.
Is my USB setup underpowered? or is there some other problem?
Also; is USB power given per port or does the entire system have a limit?
So to start, my iMac has 3x USB 2.0 ports of which:
- 1 has my 3.5" eternal HDD plugged in (it has its own power)
- 1 has an extension plugged in so that I can plug in flash drives
- 1 has a 4 port USB Hub plugged in. It doesn't have its own power source. plugged into this is:
- a printer (off most of the time)
- iPod shuffle dock
- iPod dock
- Keyboard (mouse plugged into keyboard)
I havent experienced problems in the past. I can plug in two iPods into both the docks and not experience problems but the problem comes in when I plugged a 2.5" external HDD into the USB extension. The problem was that I couldn't use the mouse. I had full keyboard control and the mouses' optical light was still on. It was just unresponsive on screen.
Is my USB setup underpowered? or is there some other problem?
Also; is USB power given per port or does the entire system have a limit?
