They have limited PCIe lanes. The N100 I ordered has a 2.5GbE and from what I can see only a x2 M.2 M-key slot. However that should be sufficient for a 10G adapter, so while perhaps janky you could try to fit one of these[1] in there.

Will have to resort to the 2242 M.2 SATA slot for storage though, or the USB ports.

[1]: https://www.aliexpress.com/item/1005005065403928.html