This cable is compatible with dock connector, USB A type connector, and a gold plated 3.5mm connector will allow you to both sync and charge your device while also providing audio output through the 3.5mm connector.
iPhone 30 pin adapter to USB (for charging) and 3.5mm audio out.
USB Line Out Dock Cable
Line Out Dock and USB Charging Cable
USB Line Out Dock Cable lets you get high-quality line out audio from the dock connector of your iPad, iPhone, or iPod while charging. One end has a 30-pin connector that attaches to the bottom of your iPad, iPhone, or iPod, the end other splits into a 1/8" (3.5mm) stereo audio plug and a standard USB connector. Plug the audio into a home, portable, or car stereo to listen to high quality, line-out audio. Plug the USB into a computer or wall charger to charge the iPad, iPhone, or iPod while listening for hours.
Connects your iPad, iPhone, or iPod to 1/8" (3.5mm) audio device and USB for charging.
Charge iPhone and iPod
Plug the audio into a home, portable, or car stereo to listen to high quality, line-out audio.
Audio and USB cable are split for over 3 feet for extra reachability
USB 1.1 and 2.0 compatible
Works with all 30 pin iPad, iPhone and iPod models except iPod shuffle