Interesting site, I've bookmarked it.

But the device the OP is considering is not N5105-based. It's an N4505-based; essentially 1/2 of an N5105.

This product is N5105 and has 4x i225 2.5GBE NICs: https://www.amazon.com/Firewall-Appliance-Celeron-Router-AES-NI/dp/B0BQDH4R35/ref=sr\_1\_6