A Main Logic Board having an electrically configurable option board interface (ECOBI) to facilitate connection of option boards into apparatus for providing optional functions. Once connected to the host, an Option board provides identification (ID) data to the main logic board host processor. The host processor determines the interface configuration necessary to enable communication between the host and the option board based on the option board ID, then configures electrically configurable interface circuitry for operational compatibility. The option board may provide an interface driver directly to the host for configuration of the interface. The interface may comprise a standard interface protocol such as PCI or USB that the host configures through the same connection to the option board.