Super Power Supply&reg; 3V 1A AC / DC Adapter Charger Cord for CCTV Camera Router Mobile Hard Disk Switch HUB Wall Barrel Plug Input: 110-220V Output: 3V 1A Warranty: 1 Year Super Power Supply products are manufactured and tested to match or exceed OEM products. Trademarked by Super Power Supply. Sold exclusively by Super Power Supply DC Plug Dimension: 5.5mm x 2.1mm