A 5 port 2.5GbE switch would upgrade this to 5 total ports (4x 2.5GbE), and costs less than $100. If you only need 1GbE then it's even cheaper.
Outside of home-labs, it's rare for me to see any devices connected to the LAN side of a wireless router these days, and more than 1 (i.e. the non-portable device that is closest to the router) is exceedingly rare.
Outside of home-labs, it's rare for me to see any devices connected to the LAN side of a wireless router these days, and more than 1 (i.e. the non-portable device that is closest to the router) is exceedingly rare.