I have a computer that I am trying to get an old scientific instrument to work on. Long story short it came with Windows 10, I downgraded to Windows 7, and am planning on using Virtual XP to run the instrument (Getting software that works with a newer version is not an option). The problem I'm having now, is that when I installed 7, I had to go into the BIOS and enable PS/2 Keyboard/Mouse Emulation to get the keyboard and mouse working, but now none of the USB ports are able to detect any other USB devices. How can I get the mouse and keyboard to work, while also being able to use USB devices?