This High-Quality Mains AC-DC Switching Adaptor Power Supply is exactly as you see in the Photos Below.Wall Mounted3M Cable LengthCE Certified12V 2A is perfect for anything 2A and below as amperage isn't forced.Connector size = 5.5mm x 2.1mm / 2.5mm (The inner spring inside the connector closes to 2.1mm and opens to 2.5mm)