USR-K6 is an Ethernet module for serial port to Ethernet, which can realize the bi-directed data transparent transmission between RJ45 port and TTL serial port. It can be applied to interface 232 and 485 by level conversion circuit.
Product user manual: https://www.usriot.com/support/downloads/USR-K6-user-manual-V100.html
M0 setting software: https://www.usriot.com/support/downloads/usr-m0-setup-software-v224288.html
(which can be also used in the the low cost serial to ethernet converters such as USR-TCP232-302, USR-TCP232-304 and USR-TCP232-306, and embedded ethernet modules USR-TCP232-T2,USR-TCP232-S2)
Testing software: https://www.usriot.com/support/downloads/usr-tcp-test-testing-software.html (USR-TCP232-Test.exe)
Technical supporting: http://h.usriot.com