Accessory USA Global AC Adapter Power Cord for Cisco PA100 SPA301 SPA303 SPA502 SPA504 SPA525 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 : 5V 2.5A