I'm setting up a new Dell Optiplex GX520. There are no PS/2 ports, so both the mouse and keyboard are USB. I haven't upgraded to TI 10 yet, so I can't report on that. I checked the TI 9 build 3677 Recovery CD, and both the keyboard and mouse work in the Full version as well as an external USB drive. That's great. I haven't had a chance to test the final TI 9 build, but I assume it will support both the keyboard and mouse. I also checked the TI 8 build 897 Recovery CD for Full mode. The keyboard works, but the mouse doesn't. Using F11 and adding "usbmouse=off" after quiet (without the quotes) makes no difference. Is there anything else to try with TI 8 that might make the mouse work such as the Safe Recovery CD? The owner of the new Optiplex owns a copy of TI 8 but not 9.