The Omnino Pro supports multiple motherboards. If you are not sure which motherboard you have, the Serial number located on the rear of the Omnino 3 can be used to find out. If the serial number on the label ends with "791" this indicate system board si Vig791S. Other options are: Vig850G: http://download.viglen.co.uk/files/Motherboards/Vig850G/ Vig870G: http://download.viglen.co.uk/files/Motherboards/Vig870G/ Vig855S: http://download.viglen.co.uk/files/Motherboards/Vig855S/ Vig790S: http://download.viglen.co.uk/files/Motherboards/Vig790S/ Vig791S: http://download.viglen.co.uk/files/Motherboards/Vig791S/ You can also use the Serial Number Search data service for full system configuration, go to: https://shop.xma.co.uk/serial-number-search If the label is damaged or you are unable to locate the code, please contact Viglen Technical Support.