The Omnino_HS supports multiple motherboards. If you aren't sure which motherboard you have, the Serial number located on the rear of the Omnino can be used to find out. If the serial number on the label ends with "535" go to ftp://ftp.viglen.co.uk/files/Motherboards/Vig535B/ Other options are: 540 go to ftp://ftp.viglen.co.uk/files/Motherboards/Vig540S/ 560 go to ftp://ftp.viglen.co.uk/files/Motherboards/Vig560S/ 565 go to ftp://FTP.VIGLEN.CO.UK/files/Motherboards/VIG565S/ GHA go to ftp://ftp.viglen.co.uk/files/Motherboards/D915GHA/ PLM go to ftp://FTP.VIGLEN.CO.UK/files/Motherboards/D945PLM/ GTP go to ftp://FTP.VIGLEN.CO.UK/files/Motherboards/D945GTP/ If the label is damaged or you are unable to locate the code, please contact Viglen Technical Support.