PS/2 connectors are not supported in Microsoft Mouse and Keyboard Center. If you connect a keyboard with a PS/2 connector, this software cannot configure any optional settings.
Some USB will not work when plugged into the keyboard; these devices may require a powered USB hub or have other hardware requirements. If your device is supported, try the following solutions:
Microsoft keyboards and the Microsoft Mouse and Keyboard Center software are not supported for use with Windows Terminal Services or Remote Desktop, and some features may not work as expected.