With these adapters you can make connections between the different MTP cables/connectors.
Two different adapter variants are offered here, the Key-up to Key-up (KUU) variant and the Key-up to Key-down (KUD) variant.
The adapters Key up to Key down (KUD) connect fiber 1 with fiber 1 of the continuing cable. There is no rotation of the fibers.
In the Key up to Key up (KUU) version, fiber 1 of the incoming cable is connected to fiber 12 of the continuing cable. Therefore a rotation takes place over all fibers.
If 24 fiber cables are used, fiber 1 is connected to fiber 12 and fiber 13 to fiber 24.