Perhaps you could visit the website of the case manufacturer to get the information on the switch wiring.
If not, you may have to trace the wires to the front panel yourself and supply your own connector labels. (Medical synthetic cloth tape works well for cheap, permanent wiring labels. Use a fine point Sharpie to mark it.)
The connectors on the motherboard should be documented in the installation manual for the motherboard. Asus has a great support page on the web for their boards.
HTH,
Phil.