| CPC G02B 6/4269 (2013.01) [G02B 6/4271 (2013.01); G02B 6/428 (2013.01); G02B 6/4292 (2013.01)] | 17 Claims |

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1. An interface module, comprising:
an interface for connection with a signal connector;
a cage for guiding the signal connector towards the interface; and
a heat sink;
wherein the cage comprises a cage portion that is configured to move from a first position to a second position upon insertion of the signal connector into the cage, wherein, when in the first position, the cage portion is not in thermal contact with the heat sink, wherein, when in the second position, the cage portion is in thermal contact with the heat sink, and
wherein the cage portion comprises a plurality of elongate apertures and a plurality of elongate sections, wherein each elongate aperture and each elongate section extends, from a first side to a second side of the cage portion, in a direction substantially parallel to a direction of insertion of the signal connector into the cage;
wherein the elongate sections permit flexing of the cage portion about an axis orthogonal to the direction of insertion of the signal connector into the cage.
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