Output: DC 12V 4A / 4000mA 48W, 3.6 Ft Cable, DC interface size: 5.5mm x 2.5mm (and compatible with 5.5mm x 2.1mm) It perfect replacement for 2A / 2.5A / 3A / 3.5A as amperage isnt forced. (If your previous Adaptor was less than 4A then this will be a perfect replacement as amperage is NOT Forced) Third generation smart IC chip features: Short Circuit Protection, Overload Protection, Over Voltage Protection to protect your device Free 5.5x2.1mm female connector easier for led strip or camera installation, save time and more securer cable connection. What You Get: 1 * DC 12V 4A power supply and 5.5mm x 2.1mm Female connector, and friendly customer service. Please feel free to Contact us at any time.