PRODUCTS > Serial Device Servers > NCOM-411


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NCOM-411 - 4-Port Serial Device Server


  • Adds four virtual serial COM ports via network connection

  • Fully supports “COM Port Control” protocol known as RFC2217

  • Supports network protocols such as TCP or UDP Client/Server

  • Serial port operation mode can be easily changed via Windows utility software or web console interface

  • Firmware upgradable for future firmware revisions

  • Supports virtual serial port driver for Windows OS (Windows XP up to Windows 10)

  • Supports pair connection mode for connecting two serial device servers over a network without a PC

  • Easy-to-use Windows utility software for easy configuration and installation

  • Configuration via web console interface or utility software

  • Windows utility software automatically finds NCOM devices on the network

  • Supports “Reset” button for system reset

  • Supports “Default” button to restore to factory settings

  • Data rates: 300bps to 460.8kbps

  • Supports RS-232 signals: DCD, RxD, TxD, DTR, GND, DSR, RTS, CTS

  • LEDs indicating Ethernet port’s link and activity statuses

  • LEDs indicating serial port’s TxD and RxD statuses

  • Virtual serial port drivers for Windows 10, 8.1, 8, 7, Vista, XP, Server 2003

  • Built-in 15kV ESD protection for all serial signals

Ethernet 10/100Mbps
Connector RJ-45 connector
Protection Built-in 1.5kV magnetic isolation
Serial Interface
Interface RS-232
Number of Ports Four
Connector DB9 male connector
Max. Speed 460.8kbps for serial data transmit & receive
RS-232 Signals DCD, RxD, TxD, DTR, GND, DSR, RTS, CTS
Protection 15kV ESD for all signals
Serial Communication Parameters
Data Bits 5, 6, 7, 8
Parity None, Odd, Even, Mark, Space
Stop Bit 1, 1.5, 2
Flow Control Hardware (RTS, CTS)
Software Features
Utility NCOM management tool for Windows OS
OS Driver Support Virtual serial port driver for Windows OS
Configuration Web console, Windows utility
Power Requirement
Power Input 9VDC to 48VDC
Power Consumption 140mA@12VDC, 60mA@48VDC
Operating Temperature 0°C to 55°C (32°F to 131°F)
Storage Temperature -20°C to 75°C (-4°F to 167°F)
Humidity 5% to 95% RH
Safety Approvals CE, FCC
Casing Plastic, ABS
Dimensions 133 mm x 125 mm x 41 mm (L x W x H)
Weight 240g

RS-232 DB9 Male Connector Pin-outs
  Pin Number Pin Type Description  
  1 Input DCD Data Carrier Detect  
  2 Input RxD Receive Data  
  3 Output TxD Transmit Data  
  4 Output DTR Data Terminal Ready  
  5 Ground GND Signal Ground  
  6 Input DSR Data Set Ready  
  7 Output RTS Request To Send  
  8 Input CTS Clear To Send