NanoPi R2S https://www.friendlyarm.com/index.php?route=product/product&product_id=282
In the web interface under "Services", there's a terminal called "ttyd"
The port for the LAN is eth0, and the port for the computer is eth1.
You can check with ifconfig
.
Run: ethtool -s eth1 speed 10 duplex half autoneg off