Detailed features: The I-7188EG is an embedded controller and powered by an 80188-40 processor with 512K bytes of static RAM, and 512K bytes of Flash memory. It provides one serial RS-232 port, one RS-485 port and one 10BASE-T port. Each I-7188EG has an Ethernet port and can take your system to the internet world. The I-7188EG also supports an optional battery back-up SRAM expansion board and Flash-Rom board, providing non-volatile mass storage from 2 megabytes to 64 megabytes.