A connector for connection between a circuit board and a further electronic component is disclosed. The connector includes an insulating housing having a board slot open towards a mating direction for accommodating the circuit board, and a plurality of terminals. The terminals have a rear portion, an intermediate portion and a tip portion, the intermediate portion including a contact portion for contacting a surface portion of the circuit board when accommodated in the board slot. The housing includes a window such that for a number of adjacent terminals housing material is absent between the intermediate portions. A shield member may be arranged in between the rear portions of the terminals. Improved circuit boards are also disclosed.