Mosa international trade (Shanghai) Co., Ltd. (hereinafter referred to as "moxa") is committed to developing and manufacturing information networking products, providing customers with cost-effective and stable serial communication solutions, serial equipment networking solutions, and industrial Ethernet solutions. In fact, most of moxa's research and development efforts are focused on serial device networking and Ethernet switching technology recently, because the use of Ethernet as the transmission backbone has become a trend. In addition, Ethernet LAN has been widely used in the world. Even non network professionals can easily set up Ethernet communication applications.