Any insert / Any insert

First, it adopts the design of "one" glyph, groove between them,
you don't have to distinguish between the shape of the plug, more
simple and quick clean; Second, it's jack is characteristic, also
is not like ordinary socket come in pairs, but the unification of
card slot, make the two holes and three pin plug can freely exchange,
bore you can take two or three plug in directly to the above, how to
also won't wrong ~