Whar does a NTSC TV connector look like?

There is no such thing. NTSC is the US TV standard not a type of input.
Your TV will have an RF input for an antenna (a threaded cylinder with a hole in the middle), composite video and audio input (standard RCA jacks), SVideo + audio input (a five pin mini plug + RCA inputs), component video + audio (5 RCA jacks) and HDMI which has digital video and audio (looks kind of like USB). In Europe there is also a SCART connection.