T-Power Ac dc adapter Compatible with ViewSonic VX2000 LCD Monitor Viewsonic A-AD-0114-0097 Replacement Switching Power Supply Cord Charger (4-pin connector) 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?? ?