This is a Cisco link for the support Network Module (NM) in a Cisco Catalyst 9300 series switch. Refer to this link for its supported fiber optic SFP/GBIC transceivers.
C9300-NM-8X Module
All ports in the C9300-NM-8X module default to 10 G and should be configured as TenGigabitEthernet1/1/1 through TenGigabitEthernet1/1/8, even when you are operating them as 1 G using SFP.
I was trying to patch a GLC-SX-MMD fiber SFP and these are minimum specs and IOS-XE support.
