The present application provides a modular interconnect apparatus. In one embodiment, the interconnect apparatus includes a frame; and a plurality of coaxial modules connected to the frame, wherein each of the plurality of coaxial modules comprises: a signal contact having a middle portion, a first end and a second end; a first ring shaped ground contact surrounding the first end of the signal contact, wherein the first end of the signal contact is coaxial with the first ring shaped ground contact; a second ring shaped ground contact surrounding the second end of the signal contact, wherein the second end of the signal contact is coaxial with the second ring shaped ground contact; and a housing that houses at least a portion of signal contact and ground contacts.