Ethernet to serial device server providing access to eight RS422/485 serial ports. Data transfer rates up to 1,000,000 baud, coupled with 1 Mbit/s line drivers deliver uncompromising performance. The ES range provides simple instant networked serial ports. RS485 - 1 twisted pair - half duplex configuration with auto gating provides trouble free data transmission due to automatic control of data direction. A web interface allows secure configuration and control of the serial ports over a local network or the Internet using any browser. Serial port tunneling (individually configurable) allows serial cable replacement over any distance, no software required. You can access the device via TCP/IP sockets from any networked device like an Android tablet, PC or phone. Brainboxes ES-842 Ethernet to Serial Device Server is one of many Terminal Servers available through Office Depot. Made by Brainboxes.