Ethernet ports are usually just relegated to connecting computers to routers to facilitate an internet connection, but they're capable of much more than that.

Here's a complete walkthrough for all three stages of the "Data Reconstruction" priortiy contract in Marathon, including where to find sparkleaf and fungal bioprinters, the agriculture report, harvest ...

You can plug in your phone, download an emulator, or install the Google Play Store to access Android apps on your computer. Some tinkering may be required.