The best replacement for ethernet port is gigabit port.

The best alternatives to ethernet port are rated as following:
★★★★★  gigabit port
★★★★  lan port
★★  usb port
★  gigabit ethernet port
★  serial port

Your alternative for ethernet port is not listed? Suggest!
Speaking about ethernet port, one probably shouldn't forget about wireless adapter.

Other search terms related to ethernet port and their ratings are:
★★★★★ wireless adapter
You have in mind a companion for ethernet port and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of ethernet port in all years. Click on graph for more.
ethernet port
gigabit port
lan port