You would usually get a basic manual for you MoBo in a file on your hard drive.
I have checked with Medion re Mobo manual myself and have been told that they do not supply a full detailed manual as the MoBo is made for Medion only.
If you require information on jumpers etc you can contact the Medion Help / Hot-line who should be able to assist. Tel 0870 7270370
You will need model number, Serial number etc that you will find on the back of your computer.