the fromt usb and audio ports on all new mb come off and come with the new cases. as long as they use standard usb 2.0 ports and front case audio port your new case will have the cables to connect the front ports to the old dell mb. After you install the mb in the new case you have to rerun realteck audio drivers and when the drivers are installed there a small box in the drivers control panel to make front and rear ports to ports not one.