I tried this question many months ago here on the forum without success so I thought I might give it one more try. I often use an MBA with a Thunderbolt Display in clamshell mode. I have an external wireless USB mouse and keyboard connected to the display via a usb receiver plugged into a usb port on the display. I have an apple bluetooth trackpad and the preferences in the MBA are set so that the trackpad is supposed to wake up the MBA. Bluetooth is turned on. I find that when I connect the TBD to the MBA while the MBA is running the display come on just fine but the wireless USB mouse and the wireless USB keyboard attached to the TBD do not function. On the other hand, if I shut down the MBA first, before connecting the TBD, the USB mouse and the USB keyboard work fine. Also, I noticed today that if I plug the USB receiver for the keyboard and mouse into the MBA instead of the TBD - the system works fully - I can connect while the MBA is running, the TBD comes on, and the mouse and keyboard work fine. Is there a way to get it working properly - connect without rebooting - when the usb receiver is plugged into the TBD usb port rather than the MBA usb port. I would prefer not to have that usb receiver connected full time in my MBA because I travel with it a lot and I'm afraid I will lose it. If not, perhaps I should go with a bluetooth keyboard and mouse instead of wireless usb? Any advantages/disadvantages between bluetooth v usb? I do not like the apple wireless keyboard but I do see that logitec makes a solar bluetooth so I suppose I could try that.