T-Power Ac Adapter Compatible with 20V AC power adapter Compatible with BenQ Q20U3 LCD monitor R0423 0R0423 ADP-90FB Rev. B PA-9 4-pin Din LSE0202C2090 Replacement Switching Power Supply Cord Charger T-Power Made with the highest quality INPUT: 110V ~240V ( work in U.S ) T-Power ac adapters are made with the highest quality materials. T-Power products were tested by manufacturer to match and/or exceed specifications of OEM products 1-year limited warraty?? ?