Amazon.co.jp: Access USB2.0 to Mini B Extension Cable USB 2.0 to Mini B 5PIN Cable Male to Female Mini B Connector Male to Mini B Connector Female Data Transfer & Charging Support
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USB 3.0 Adapter - Micro-B - Micro-B Extension w/ Panel Mount and Screw Lock - USBFireWire.com - 877-522-3779
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NEW PRODUCTS – USB Extension Cable with Data/Charge Sync Switch / USB Micro B Cable with Data/Charge Sync Switch « Adafruit Industries – Makers, hackers, artists, designers and engineers!