2909 Adafruit USB 2.0 and Ethernet Hub - 3 USB Ports and 1 Ethernet Arduino, Electronics and Robotics Electan, OnLine Store
DP83848 Ethernet Physical Transceiver Connector Control USB B Type Interface Board Embedded WEB RJ45 Module Server for Arduino|Instrument Parts & Accessories| - AliExpress
Communication between two Arduino | Arduino Tutorial
Add Ethernet to Any Arduino Project for Less Than 10$ : 4 Steps - Instructables
Linux, WiFi, Ethernet, USB, All in one Yun Shield for Arduino Leonardo, UNO, Mega2560, Duemilanove Development Board|shield for arduino|usb usblinux wifi - AliExpress
Arduino Ethernet shield and Python socket | Freedom Embedded
Using both USB Host ver 2.0 and Ethernet shield on UNO - Networking, Protocols, and Devices - Arduino Forum
Arduino Ethernet Library 2.0.0
Nettigo: USB/Serial converter [Arduino A000059]
Interfacing Ethernet Shield with Arduino: How to send data to server
Programming the Arduino Ethernet Board – gr33nonline
RS232 to USB Converter With Arduino Due Or Mega 2560 - Copperhill