Miniaturized electrical connector with features to prevent short circuit of power terminals

A pair of electrical connectors comprising a plug connector and a receptacle connector,

• wherein the plug connector comprises:
• (a) a plug housing comprising a plug base and a wall protruding upwards from the plug base;
• (b) a plug signal terminal disposed on the wall;
• (c) a plug power terminal disposed on the wall;
• (d) a fastening wall formed on the wall between the plug signal terminal and the plug power terminal;
• (e) a connection wall between the fastening wall and the wall of the plug connector, the connection wall being smaller in height and width than the wall of the plug connector;
• and
• (f) a through-hole formed through the plug housing at both sides of the connection wall;
• the receptacle connector comprises;
• (g) a receptacle housing comprising a receptacle base, a first wall protruding from an upper surface of the receptacle base, a second wall protruding from the upper surface of the receptacle base and crossing the first wall, a third wall protruding from the upper surface of the receptacle base, crossing the second wall, and facing the first wall, and a fourth wall protruding from the upper surface of the receptacle base, crossing the first and third walls, and facing the second wall;
• (h) a receptacle signal terminal disposed at least on the second wall;
• (i) a receptacle power terminal disposed at least on the first wall;
• and
• (j) a fastening groove formed between the second wall and the fourth wall, and
• the fastening wall is placed on the fastening groove with the plug connector completely fitted into the receptacle connector.