Working on a Dell Dimension 4100 Pentium III to use as a retro machine running Windows 98 SE. I just now realized that although it has 2 USB ports in the back it is too old to recognize my USB controllers, keyboard and mouse. I do have a ps2 keyboard but not sure about the mouse and old serial type controller. Don't even know if I even have one anymore. Any ideas or possibilities that there is a work around for any or all? Thanks