Cisco Catalyst 9200 Single Spare Stacking Module C9200-STACK-RFB is a refurbished spare stacking module for the Catalyst 9200 family. It is intended for network equipment setups that use stacking to manage compatible switches together.
Cisco documents StackWise-160 stacking for modular Catalyst 9200 models. Its data sheet describes the related C9200 stack kit as using two data stack adapters and one stacking cable. That helps explain the role of stacking hardware within a supported switch stack.
Cisco distinguishes modular C9200 models from fixed C9200L models and does not support mixing the two families in one stack. This listing identifies the item as a single spare module; it does not confirm additional kit components or cables are included.