DC Plug Supply Socket is used for supplying power to the development boards, power supply converter PCBs, in small electronic devices and equipment. This is a standard sized barrel jack connector that has been in use for a long time now and it is very reliable and proven to be used in industry. This is used in a large quantity hence these are prone to be damaged and has to be replaced accordingly. Also it was used in many of the old school TV and other electrical appliances so it is a very useful connector to have in electronics repair shop. This connector can take upto 1.5A of current easily so you can connect the heavy electrical loads through this connector. The plastic and rubber insulation is very reliable so you don’t have to worry about getting electrical shocks from it.