Carefully remove your Compu-Dobby from the loom. Take careful note of the position your current Rabbit Core Module is in (ie: which side faces the top of the loom).Gently pull the Rabbit Core from the processor board.Position the new Rabbit Core in the same orientation as the old one and carefully align the pins with the holes on the processor board. Make sure all pins are lined up with all holes. Press the Rabbit Core gently and firmly into place.Use the photos and video below to help and call AVL if you have any trouble with installation.1-800-626-9615.[PICTURES + VIDEO]