ESP902 Serial Server VLinx, 1x10/100M Ethernet, 1xRS232 + 1x(RS232 RS422 RS485).
No Software or Power Adapter provided!Minor scratches.

VLINX Model ESP902 Ethernet Serial Server provide Ethernet to Serial connections for RS-232, RS-422 or RS-485 devices. The ESP902 features two serial ports. The serial ports can be accessed over a LAN/WAN using Direct IP Mode, Virtual COM Port, or Paired Mode connections. The 10/100 Mbps Ethernet connection auto-selects 10BaseT or 100BaseTX and indicates the type of connection with a bi-color link light. 
The ESP902 Serial Server enables communication with serial devices over a LAN or WAN. Serial devices no longer are limited to a physical connection to the PC COM port. They can be installed anywhere on the LAN using TCP/IP or UDP/IP communications. This allows traditional Windows PC software access to serial devices anywhere on the LAN/WAN network. Multi-interface serial ports           ESP902 Port 1 software selectable for RS232, RS-422, RS-485 (DIP Switch selects Console Mode)
           ESP902 Port 2 is RS-232 only
10/100 Mbps Ethernet with Auto SelectionLAN and WAN CommunicationsTCP or UDP Client or Server operation - configurableConfiguration of Ethernet and serial port settings can be accomplished using any of four methods:           a) Web Server allows configuration via the network using any web browser.           b) Telnet allows configuration via the network by accessing the setup configuration menu. 
           c) Console Mode allows configuration through an RS-232 serial port in using a VT100 Terminal Emulation program and an RS-232 crossover cable.
Virtual COM port provides access to any of the ports on the ESP902, like any other serial port (legacy, PCI, USB or PCMCIA) on the computer. Any program running on the computer and using Windows-based COM ports can access the serial devices attached to the Serial Server. The LAN becomes transparent to the serial device and the software running on the PC.Heart Beat Connection - selectable protocol ensures reliable communications in Virtual COM Port or Paired Connection modes. This feature restores the connections if communications are temporarily lost at either end due to loss of power or the Ethernet connection.