I have an anywhereUSB/5 box that has 3 serial to USB connections, and a toshiba dynadock that has my video/mouse/kb. I can configure the device correctly and it connects just fine. After a period of time(random) it loses one of the com ports. I can disconnect one on the com ports and this problem goes away. I am not sure what is causing this issue. I am fairly new to this product and not sure where to go next with it. All help is appreciated.