KNACRO AC 100-240V to DC 48V/3A 48V 3A 144W Power Supply Adapter AC Switching Power Transformers Interface 5.5 x 2.5mm Suitable for Routers switches control systems High quality Lithium battery charger, the new IC solutions, intelligent control chip board, full of lights change, security, efficiency and stability. EMI absorption ring, it also has to absorb EMI, the ability to absorb static pulse magnetic, electronic equipment to achieve compatible (EMI / EMC) and electrostatic discharge of corresponding international standards. Protection: short circuit protection, overcurrent protection, overcharge protection, over-discharge protection, high voltage protection, over power protection, thermal protection, put mine protection, electromagnetic protection. All copper nickel-plated plug, standard safety input jack, using a conductive material more pure steel, wear no deformation, and plug the test up to 3000 times, still can better ensure charging contacts. ABS plastic shell, high temperature wear. Interface Size: 5.5x2.5mm .