I have a problem according to USB-Devices in windows 7. Im running parallels 4.0 on my Mac. I have a few USB devices I only use on windows. After I started my virtual machine they are not detected (except my USB Microphone! - works every time!) So I have to manually "connect" the device by clicking on in in in Devices -> ext. Devices -> "xxx" every time i boot my machine. After that the Devices are working perfectly. Once I shut down the machine I have to do the same. Unplugging an plugin in the device works, too. The devices are set to "permanently auto connect" to windows like this tutorial: http://kb.parallels.com/en/111725 On my second Mac with exact the same Parallels and Win version this works fine. It seems like MacOS is "blocking" to unmount the device so that parallels can't mount it to windows after startup. Any one an idea? Thanks!