150 152 160 and 162 such connectors and their associated modules may be configured to connect modules one above or below the other vertically if the attachment of the modules to one another is done by connecting them to a back panel which holds them together for example a back panel similar to back panel 170 then such back panel may be configured to connect modules one above or below the other vertically namely such back panel may be shaped as a horizontal panel with one or more vertical protrusions erecting upwards or downwards additionally or alternatively one or more separate vertical back panels may be used to connect modules one above or below the other reference is now made to fig3 which shows an exemplary 1u 2 module 300 which may be for example module 114 of fig1 and 2 having an rj45 socket 302 and a mini usb socket 304 serving here merely as an example module 300 may have a generally cubic shape one or more corners of module 300 may have a recess such as recess 306 extending from a front facet 308 of the module towards the back of the module recess 306 may include two differently leveled plateaus a high plateau 312 and a low plateau 314 low plateau 314 may have a bore 316 through which a screw may be threaded from the front or the back depending if front access or back access is desired a vertical surface 313 between plateaus 312 and 314 may serve as a support for a connector connecting between module 300 and an adjacent module referring now back to fig1 an exemplary connector such as an i shaped connector 150 may include.