Abstract: A screen (60) for reducing the electromagnetic coupling between a first and a second adjacent pair (62, 64) of electrical connectors (52), which are arranged in a row of pairs of electrical connectors (52) in a connector block (10), contains a first electrically conducting surface (66) which is shaped for arrangement between the first and the second adjacent pair (62, 64) of electrical connectors (52); and two electrically conducting surfaces (68, 70) spaced apart, which are electrically coupled with corresponding sections of the first electrically conducting surface (66) and which stand up from these sections in the transverse direction, in a common direction, and form a three-sided screen for a pair of electrical connectors (52).