The OtterBox 3600 Rubber Plug Access Kit allows you to sync and charge your PDA unit without removing it from the case by replacing the standard end plugs with these "easy access" plugs. These easy-to-use plugs are easily opened from the outside, and they allow quick access to the SD and CF slots on top of your device. Made out of elastomeric material for longer life, this kit includes plugs for both the top and bottom of the case, and is extremely easy to install and use. Note: Plugs are not watertight but are highly water-resistant.