The ES-U-2016-RM is a 16-port USB-to-Serial Adapter. It allows quickly allows the addition of sixteen RS422 / RS485 serial communication ports to your system by connecting to a single USB port. Each of the 16 ports can be individually configured to RS422 or RS485 modes using DIP switches. The adapter has a built-in power supply (100V - 240V input) and can be mounted on a DIN rail or in a 19” rack using the supplied brackets.
 

The ES-U-2016-RM is compatible with a wide range of operating systems including Windows 7, Windows Server 2008, Windows Vista, Windows XP, Windows 2000, Windows Server 2003, Mac, Linux and WinCE (4.2 – 6.0). The latest drivers are available from the Downloads tab on this page.
 

Features:

•      Adds sixteen serial ports by connecting to a single USB port (USB 1.1 or 2.0)
•      DIP switches allow each port to be individually configured for RS485 full-duplex, 
                        RS485 half-duplex or RS422 modes
•      Industry standard FTDI FT4232H chipset and drivers
•      Virtual Com Port drivers make all ports appear as standard Windows COM ports
•      COM port number is selectable for each port)
•      Internal FIFO buffers (1Kbyte transmit buffer and 1Kbyte receive buffer per port)
•      Full hardware and software flow control
•      Automatic transmit buffer control for 2-wire RS485 half-duplex operation
•      Serial port baud rates up to 1 Mbps with non-standard rates supported
•      Sixteen DB9 male serial connectors
•      RS422 signals: Tx-, Tx+, Rx+, Rx-, GND, RTS-, RTS+, CTS+, CTS-
       RS485 signals: 
                            Full-duplex: Tx-, Tx+, Rx+, Rx-, GND 
                            Half-duplex: data-, data+, GND
•      Selectable internal 120 Ohm termination resistors for Tx, Rx and CTS termination
•      Internal 750 Ohm biasing resistors for Tx and Rx biasing selectable by jumper
•      15 KV ESD surge protection
•      Two LEDs per port indicate data transmit and receive
•      0.9 meter USB cable included
•      Built-in switching power supply (100V - 240V input)
•      SECC sheet metal chassis with 19in rack mount kit supplied; DIN rail bracket available seperately
•      Dimensions: 429 mm x 152 mm x 44 mm
•      Dimensions with DIN rail brackets: 451 mm x 152 mm x 44 mm