This is a 32 position charging case for the old and new style transponders as shown in the photo. The yellow transponder does not go with the case but was used to demo the fact the unit does work. One photo points to a loose but stable connection that plugs into the charge station. Included is the power source to do the charging as shown in the photos WE are in a complete liquidation of all karting materials, however this is used as a back up currently for our race events at Michiana Raceway Park.
Please examine this product closely to insure it is something that you can use. It is better to ask questions in advance than after the purchase.