HELP - I posted earlier that the USB option worked.  It did, but only in some computers and some USB ports.   It works well on my laptop when I use the USB ports on my docking bay.  However, when I try to use it in the USB ports on the laptop itself, it does not even detect it.  I have tried both ports many times.  One time, XP reported that the USB device that I plugged in malfunctioned.  I have also tried it in my home computer that regularly has USB devices plugged in.  I even unplugged all USB devices because I thought that it might be a power issue.  Speaking of power, do you think that the USB port is unpowered on my computers?  I bought a new motherboard specifically for the MAME I am building, but the power supply that I was going to use is not the right type, so I have been unable to test the minipac on its future motherboard mate.  I have purchased another power supply as well as a USB externally power hub in order to test with the new motherboard as well as a powered hub.  Any ideas would be greatly appreciated.