This Power Charger will work like a charm with your Acer s7-391 ultrabook,US standard power cord is also attached for your convenience. We do proudly declare that this AC adapter is superior.Besides, our AC adapter is brand new and backed by a 30-day money guarantee,AC input 100V-240V worldwide applicable, 1 year warranty,30 days return and fast shipping, Please purchase with full confidence.
Got what I needed for a fair price
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