Replacement USB power cable for Amazon Kindle Fire Stick. Length: 6 feet. Kindle Fire Stick / Kindle Fire Stick is a registered trademark of Amazon. ienza is a registered trademark. Use of the ienza trademark without the prior written consent of ienza, LLC. may constitute trademark infringement and unfair competition in violation of federal and state laws. ienza products are developed and marketed as cost-effective alternatives to OEM parts. They are not necessarily endorsed by the OEMs.