USB Data Charge Sync Cable for Blackberry Bold 9700 / Storm 2 9550 / Curve 8530 USB Data Cable for Data Transfer and Syncing with your cell phone. Connect your cell phone with your PC/Laptop by the USB port. Allow to manage & backup your phonebook, and change ring tones/logo etc. Allow you access your contacts, PC data, the Internet and e mail. Transfer rate up to 4 Mbps.