I have a Logitech USB TrackMan Wheel that I sometimes connect to my MacBook Pro when I'm doing work in Google Sketchup. When it is connected (and working properly), it does not appear under the devices in my Finder, thereby I'm not able to Eject it. I know that it is best practice to eject a USB device prior to physically disconnecting the device from the laptop. What do I do in this situation? Simply disconnect the USB connector? Turn the computer off then disconnect, then re-power it?