Shielded Plug Connector Module

In order to improve the shielding of a plug connector module (1, 1') and of a plug connector modular system equipped therewith, in particular against high-frequency interference fields, the insulation body (10, 10') of said module is form-fittingly surrounded all around by a shielding element (15, 15'). This additionally allows the earth connection of a metal plug connector modular frame (2) to a shield transfer element (14, 14') of the plug connector module (1, 1') and thus also an earth connection to a mating connector. Thus the shield element (15, 15') itself is also earthed all around and at multiple points, and as a result can suppress the effect of in particular high-frequency electrical and/or magnetic interference fields particularly well.