| Brand | Unbranded |
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Check the listing for details. USB DC 5V to 15W 3.3V-24V Adjustable Step Up/Down Boost Buck Power Supply Module. Condition: New. Listed at 8.99 USD. Comfortable outer casing. Short press button ON/OFF or SELECT to trigger fast charging protocol.It will display OK and FC indicator turn ON if the triggering is successful.Otherwise display Err and FC indicator turn OFF.