Gomadic TipExchange Tip 21 Portability: Multiple cable tips can be used on TipExchange accessories to support multiple mobile device platforms and to enhance portability (e.g. users can have a single car charger with different tips for mobile phone, PDA and mp3 player!) Future Proofing: Protects investment in mobile device accessories. When user changes or upgrades to new mobile device, inexpensive cable tips provides instant conversion of all Gomadic TipExchange-enabled accessories. Gomadic TipExchange tips are designed to work exclusively with all Gomadic brand chargers and USB data cables. Each TipExchange tip matches a specific consumer electronic device. Please use the contact seller form if you need help finding a specific TipExchange match for your mobile device. Accessory Availability: No longer will users need to wait for their favorite accessory to be available. When new mobile devices are released to market, a single cable tip will spawn an instant comprehensive line of accessories including USB sync cables, car chargers, wall chargers, battery back-up packs, powered PDA mounts and more!