Trying to use the latest Zenworks 7SP1 imaging boot CD (June 2011) in a Dell Optiplex GX520 with no PS/2 ports. I have a USB keyboard plugged in and can use it to tell it to boot from CD, but when Zenworks loads I cannot get it to step down from automatic mode to manual mode. Once it times out, and loads automatic mode, I can type the IP address of the imaging server, but have never set it up to do automatic. I have tried some older imaging boot CDs with the same results. I have looked in the BIOS for any USB legacy settings, but found none. I have keyboard function before and after the boot options screen. Any ideas?