Mini USB to Micro USB Adapter w/ ON/OFF switch can connect to your own headphone or amplifier for the USB port, you are able to Data HotSync and battery charging the device via USB cable.
Features :
Light, around 4g
Length, around 32mm
Compatible :
Amazon Kindle DX
Archos 5 Internet Tablet
BlackBerry Bold 9700
BlackBerry Curve 8520
BlackBerry Curve 8900
BlackBerry Curve 8930
BlackBerry 9300 (Javelin)
BlackBerry Storm 9500
BlackBerry Storm 9530
BlackBerry Storm 9530T
BlackBerry storm 2 9520
BlackBerry Storm 2 9550
Blackberry Tour 9630
Google nexus one
HP iPAQ Voice Messenger
HP iPAQ Data Messenger
HTC HD2 (T8585)
HTC HD2 US
HTC Leo
HTC Leo 100
Nokia N900
Nokia N97
Nokia N97 mini
Palm Pre
Samsung i8000 Omnia II
Samsung I7500 Galaxy
Samsung S8300
Samsung GT-B7610 OmniaPRO
Samsung GT-B7610 Omnia QWERTY
Samsung Louvre
Motorola MILESTONE
Motorola Droid
Palm Pixi