DarkStarJedi, your photo is left over from Neumann's older arrangement of extension cables which is no longer sold except on special order. The original arrangement involved a cable (LC 3) with a receptacle for the active capsule on one end and a Lemo connector on the output end. The part shown in the lower right corner of your group photo is the old-style KA 100. It screws onto the KM 100 or KM 100 F output module (amplifier/body of the microphone) and offers a Lemo socket which the LC 3 (or other old-style accessories) could plug into. Finally, an LC 2 extension cable, with Lemo connectors on both ends, could be used to extend an extension cable or other accessory in this older type of arrangement.
The newer accessories don't have Lemo connectors at all--they terminate directly in the type of screw-on connector which attaches to a KM 100 or KM 100 F amplifier/body. This makes the arrangement more resistant to RFI, but loses the capability of using an in-line extension cable such as the old LC 2.
The LC 3 KA extension cable, for example, is the replacement for the former combination of LC 3 + KA 100. It is available in 5-meter or 10-meter lengths from stock, or it can be specially ordered in other lengths. However, this is an unbalanced signal connection, so for the sake of maximum RF immunity its length should be kept to a reasonable minimum.
The current-model KVF and SMK goosenecks (whose names all end in "KA" now as well) similarly terminate in a connector that screws directly onto the amplifier body, so the KA 100 is not needed for them, either.
--best regards