Accessory USA Adapter Charger for Seagate Portable HD 9SF2A2-500 9NK2AE-510 9SF2A4-500 Power Products trademarked Accessory USA are marketed and sold exclusively by Accessory USA Store. Warranty:30 days Money Back Promised/60 Days Free Exchange With Paid Return Label/365 Days Anytime Worry-Free Warranty!**100% MONEY BACK GUARANTEE !! IF OUR PRODUCT CAN NOT WORK WELL** Output : 12V 2A