What is the voltage and polarity needed for SuperPro 9000U AC adaptor? Updated on October 10, 2015 By admin Comments Off on What is the voltage and polarity needed for SuperPro 9000U AC adaptor? Author: admin Input: 100-240V/ 60Hz Output: 24V/6A Outside ring is + and inside ring is – Was this answer helpful ? Yes (0) / No (0) By admin