There are three flap doors on the port side, one for 30 amp plug, one for switch and guage on 30 amp plug, and one for access to the normal Honda receptacles, switches and controls. The length of a 30 amp adaptor plug is almost the same as that of the fixed, 30 amp yoke which locks in the plug so I chose that. You can pull the genset and use that yoke to tie two i2000's together.