Is Cisco Stupid Or Are I Stupid?

looking at 9500 data sheet specifically this model C9500-16X

https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-9500-series-switches/data_sheet-c78-738978.html

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The description says "Cisco Catalyst 9500 Series 16-port 1/10 Gigabit Ethernet switch with SFP/SFP+" but the multigig port density is 24? Is that factoring a non-standard 8 port module? I don't understand.