12V 19V USB Type Female Jack To USB Square DC Power Plug

Socket, also known as power socket, switch socket. Socket refers to one or more than one circuit wiring can be inserted into the seat, through which various wiring can be inserted.
This is easy to connect with other circuits. Through the connection and disconnection between the circuit and copper parts, to achieve the final part of the circuit to connect and disconnect.
Classification by use:
Civil socket, industrial socket, waterproof socket, ordinary socket, power socket, computer socket, telephone socket, video, audio socket, mobile socket;
Power socket: Electrical accessory having a socket designed to fit with a pin of a plug and equipped with a terminal for connecting a soft cable.
Fixed socket: A socket used to connect to fixed wiring.
Portable receptacle: A receptacle intended to be attached to or integral to a soft cable and easily moved from one place to another when connected to a power source.
Socket: A combination of two or more sockets.
Appliance socket: A socket intended to be installed in or fixed to an electrical appliance.
Removable plug or removable receptacle: An electrical accessory structurally capable of replacing a soft cable.
Non-removable plug or non-removable mobile socket: an electrical accessory that forms an integral structure with the soft cable after being connected and assembled by the electrical accessory manufacturer.
Note: family wall socket belongs to fixed socket; Row plug without power cord and plug is called mobile socket, with plug to form a whole is called converter
The product with the national standard combination hole should belong to the converter and meet the standard GB2099.3-2008 "Household and similar use plug and socket Part 2: Special requirements for converters (IEC60884-2-5:1995,MOD) Converters are defined as mobile electrical accessories consisting of a plug section and one or more socket sections as an integral unit. Specific see photo 1 most people mentioned socket should be the actual jack to meet GB1002-2008 hole type, namely pure national standard hole products.