Please reference the TMGmatrix for Cisco's official optic-to-device compatibility list. Click this LINK for a filtered list of all optics for C9300/C9300L/C9300X platforms
These compatible optics are covered under the existing Cisco Warranty terms available here
If you found this post helpful, please give it Kudos. If my answer solves your problem please click Accept as Solution so others can benefit from it.