You cannot stack fixed (C9200L SKUs) with modular (C9200 SKUs) models, or other Catalyst switches, e.g. Cisco Catalyst 2960-X and 2960-XR Series. Stacking not available on C9200CX switches. The optional StackWise-160 and StackWise-80 kits consist of …
Cisco Catalyst 9200-24T Switch. Field Notice: FN70506 - Authentication Failure Observed on C9200/C9200L Switches When a Stacking Cable, Stack Adapter, or Network Module Is Inserted in the Switch - Hardware Upgrade Available ; Cisco Catalyst 9200L Switch Stack
c9200l-24pxg-4x. Designed for branch wired and wireless converged access. 16-port 1G, 8-port 10GBASE-T, 10G/5G/2.5G/1G multigigabit, 1000M/100M. Two 25G/10G/1G fixed uplinks or four 10G/1G fixed uplinks.