Can I stack 9300X with C9300-48P? I have a site that need to use 18 spf port and 48 copper port so i don't need them to purchase 3 switches C9300-48 ports to get 18 ports that will be expensive so i was thinking to go with C9300X, but it should stack to C9300-48P for redundancy.

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Mixed Stacking with Backward Compatibility – Stack your Catalyst 9300X fiber switches with Catalyst 9300 and Catalyst 9300X Multigigabit switches, bringing stackable high-speed fiber to the access

However, there's a few caveats w/regards to licencing levels. The section Stacking in the above document has the details.

If many SFP slots is what you're after, there's SFP-only models in both the C9300X and C9300 range.

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