The option board handles serial communication (RS232/RS485) as well as internal CAN-bus communication. One is present as standard in the M500 and two are present in the L3000. In both M500 and L3000, one option board is present in the surface unit.

If you are replacing an option board, please send the current System software version in the comment section of the order. This can be found in ROV analyzer "Revisions" tab.