This micro chip is easy to install. It plugs into the socket on your circuit board and upgrades your charger to the latest software Version 13 released in 2006. Remove the four screws which are holding the charger together. Flip the charger over into the gray tub. Use needle nose pliers to carefully remove (wiggle upwards) the old chip from its' socket. The small notch faces the middle of the charger , not the edge of the charger. If it goes in backwards no harm will be done, but you will see black squares on the display.You may use a Popsicle stick to guide in the feet and press gently.