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NPort 5100 Series

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1-port RS-232/422/485 serial device servers

Product Feature

  • Small size for easy installation
  • Real COM/TTY drivers for Windows and Linux
  • Standard TCP/IP interface and versatile operation modes
  • Easy-to-use Windows utility for configuring multiple device servers
  • SNMP MIB-II for network management
  • Configure by Telnet, web browser, or Windows utility
  • Adjustable pull high/low resistor for RS-485 ports


NPort® 5100 device servers are designed to make serial devices network-ready in an instant. The small size of the servers makes them ideal for connecting devices such as card readers and payment terminals to an IP-based Ethernet LAN. Use the NPort 5100 device servers to give your PC software direct access to serial devices from anywhere on the network.


Most Cost-effective Serial-to-Ethernet Solution

Using serial device servers to connect legacy serial devices to Ethernet is now commonplace, and users expect device servers to be cost-effective and to provide a broad selection of useful functions. With its full support of Microsoft and Linux operating systems and solid 5-year warranty, the NPort® 5100 Series provides the best choice for serial-to-Ethernet converters.


Adjustable Termination and Pull High/Low Resistors

In some critical environments, termination resistors may be needed to prevent the reflection of serial signals. When using termination resistors, it is also important to set the pull high/low resistors correctly so that the electrical signal is not corrupted. Since no set of resistor values is universally compatible with all environments, the NPort® 5100 device servers come with jumpers for adjusting termination and pull high/low resistor values for each serial port.


Standard TCP/IP Interface and Broad Choice of Operation Modes

The NPort® 5100 device servers can be configured for TCP Server, TCP Client, UDP Server/Client, Pair Connection, or Ethernet Modem mode, ensuring compatibility with software based on a standard network API (e.g., Winsock or BSD Sockets).


Real COM/TTY Drivers for Existing Software

The Real COM/TTY drivers provided with the NPort® 5100 device servers allow you to continue using software designed for communicating through COM/TTY ports. Installation and configuration are painless, and allows your serial devices and PC to communicate seamlessly over a TCP/IP network. Using Moxa’s Real COM/TTY drivers is an excellent way to preserve your software investment while still allowing you to enjoy the benefits of networking your serial devices.


Easy to Troubleshoot

NPort® 5100 device servers support SNMP, which can be used to monitor all units over Ethernet. Each unit can be configured to send trap messages automatically to the SNMP manager when user-defined errors are encountered. For users who do not use SNMP manager, an email alert can be sent instead. Users can define the trigger for the alerts using Moxa’s Windows utility, or the web console. For example, alerts can be triggered by a warm start, a cold start, or a change in password.

Ethernet Interface

10/100BaseT(X) Ports (RJ45 connector)


Magnetic Isolation Protection

1.5 kV (built-in)

Ethernet Software Features

Configuration Options

Web Console (HTTP), Serial Console (NPort 5110/5110-T/5150 only), Telnet Console, Windows Utility



Windows Real COM Drivers

Windows 95/98/ME/NT/2000, Windows XP/2003/Vista/2008/7/8/8.1/10 (x86/x64), Windows 2008 R2/2012/2012 R2 (x64), Windows Embedded CE 5.0/6.0, Windows XP Embedded

Linux Real TTY Drivers

Kernel versions: 2.4.x, 2.6.x, 3.x, 4.x, and 5.x

Fixed TTY Drivers

SCO UNIX, SCO OpenServer, UnixWare 7, QNX 4.25, QNX 6, Solaris 10, FreeBSD, AIX 5.x, HP-UX 11i, Mac OS X

Android API

Android 3.1.x and later


RFC1213, RFC1317

Serial Interface


DB9 male

No. of Ports


Serial Standards

NPort 5110/5110-T: RS-232
NPort 5130: RS-422, RS-485
NPort 5150: RS-232, RS-422, RS-485

Operation Modes

Disabled, Ethernet Modem, Pair Connection, Real COM, Reverse Telnet, TCP Client, TCP Server, UDP


NPort 5110/5110-T: 110 bps to 230.4 kbps
NPort 5130/5150: 50 bps to 921.6 kbps

Data Bits

5, 6, 7, 8

Stop Bits

1, 1.5, 2


None, Even, Odd, Space, Mark

Flow Control

RTS/CTS (RS-232 only), DTR/DSR (RS-232 only), XON/XOFF

Pull High/Low Resistor for RS-485

NPort 5130/5150: 1 kilo-ohm, 150 kilo-ohms

RS-485 Data Direction Control

NPort 5130/5150: ADDC® (automatic data direction control)

Serial Signals




Tx+, Tx-, Rx+, Rx-, GND


Tx+, Tx-, Rx+, Rx-, GND


Data+, Data-, GND

Power Parameters

Input Current

NPort 5110/5110-T: 128 mA @ 12 VDC
NPort 5130/5150: 200 mA @ 12 VDC

Input Voltage

12 to 48 VDC

No. of Power Inputs


Source of Input Power

Power input jack

Physical Characteristics



Dimensions (with ears)

75.2 x 80 x 22 mm (2.96 x 3.15 x 0.87 in)

Dimensions (without ears)

52 x 80 x 22 mm (2.05 x 3.15 x 0.87 in)


340 g (0.75 lb)


Desktop, DIN-rail mounting (with optional kit), Wall mounting

Environmental Limits

Operating Temperature

Standard Models: 0 to 55°C (32 to 131°F)
Wide Temp. Models: -40 to 75°C (-40 to 167°F)

Storage Temperature (package included)

-40 to 75°C (-40 to 167°F)

Ambient Relative Humidity

5 to 95% (non-condensing)

Standards and Certifications


EN 55032/24


CISPR 32, FCC Part 15B Class A


IEC 61000-4-2 ESD: Contact: 4 kV; Air: 8 kV
IEC 61000-4-3 RS: 80 MHz to 1 GHz: 3 V/m
IEC 61000-4-4 EFT: Power: 1 kV; Signal: 1 kV
IEC 61000-4-5 Surge: Power: 1 kV
IEC 61000-4-6 CS: 150 kHz to 80 MHz: 3 V/m; Signal: 3 V/m
IEC 61000-4-8 PFMF
IEC 61000-4-11 DIPs


UL 60950-1



NPort 5110/5110-T: 3,126,448 hrs
NPort 5130: 2,836,863 hrs
NPort 5150: 2,736,202 hrs


Telcordia (Bellcore) Standard TR/SR


Warranty Period

5 years


Name Type Version Release Date
Datasheet for NPort 5100 Series Datasheet V1.3 11 December 2019

NPort 5110

Operating Temp. 0 to 55°C
Baudrate 110 bps to 230.4 kbps
Serial Standards RS-232
Input Current 128.7 mA @ 12 VDC
Input Voltage 12-48 VDC

NPort 5110-T

Operating Temp. -40 to 75°C
Baudrate 110 bps to 230.4 kbps
Serial Standards RS-232
Input Current 128.7 mA @ 12 VDC
Input Voltage 12-48 VDC

NPort 5130

Operating Temp. 0 to 55°C
Baudrate 50 bps to 921.6 kbps
Serial Standards RS-422/485
Input Current 200 mA @ 12 VDC
Input Voltage 12-48 VDC

NPort 5150

Operating Temp. 0 to 55°C
Baudrate 50 bps to 921.6 kbps
Serial Standards RS-232/422/485
Input Current 200 mA @ 12 VDC
Input Voltage 12-48 VDC

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