Does the 140XBE10000 Quantum backplane extender module come as a kit or are the components sold separately?

The 140XBE10000 Quantum backplane extender module are sold separately and you also need to purchase the extender cable (see below).
140XCA71703 Quantum backplane extender cable, 3 ft, 1 m
140XCA71706 Quantum backplane extender cable, 6 ft, 2 m
140XCA71709 Quantum backplane extender cable, 9 ft, 3.1 m