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NPort 6400-G2 Series

2nd Gen 4-port RS-232/422/485 secure terminal servers

moxa-nport-6400-g2-series-image-(1).jpg | Moxa
moxa-nport-6400-g2-series-image-1-(1).jpg | Moxa
moxa-nport-6400-g2-series-image-2-(1).jpg | Moxa
moxa-nport-6400-g2-series-image-3-(1).jpg | Moxa
moxa-nport-6400-g2-series-image-4-(1).jpg | Moxa
moxa-nport-6400-g2-series-image-5-(1).jpg | Moxa
moxa-nport-6400-g2-series-image-6-(1).jpg | Moxa

Features and Benefits

  • Data encryption with secure operation modes for Real COM, TCP Server, TCP Client, Pair Connection, Terminal, and Reverse Terminal
  • Secure Boot only allows Moxa-authorized firmware to run on devices
  • One-click log collection and application analysis for easy troubleshooting
  • Easy RS-485 configuration of serial interfaces with software-adjustable pull high/low resistor and terminator
  • Supports SSL certificate signing by RSA-4096 / ECC-521
  • IEC 62443-4-2 Security Level 2 certified

Certifications

  • moxa-ce-certification-logo-image.png | Moxa
  • moxa-fcc-certification-logo-image.png | Moxa
  • moxa-ul-listed-certification-logo-image.png | Moxa
  • moxa-nema-ts2-certification-logo-image.png | Moxa
 
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Introduction

Moxa has leveraged the IEC 62443-4-1 secure development life-cycle process to develop a new generation of secure terminal servers. The NPort 6400-G2 Series secure terminal servers are also IEC 62443-4-2 Security Level 2 certified, enabling secure connections for your legacy serial devices to industrial networks. In addition, user experience is enhanced based on Moxa’s 35 years of experience in the serial-connectivity field by providing versatile installation means for different space requirements and an easy-to-use troubleshooting tool for maintenance.

Secure Data Transmission

For many applications, guaranteeing secure data transmission is an important concern when connecting serial devices to a network. To answer this concern, the NPort® 6400-G2 secure terminal servers support the TLS and SSH protocols, which work by encrypting data before sending it over the network. With the NPort® 6400-G2, you can be rest assured that serial data is transmitted securely over both private and public networks.

One-click Logs and Application Analysis for Easy Troubleshooting

During the deployment stage, system integrators must connect devices and ensure the communication is smooth. They may encounter issues and will require tools to troubleshoot issues. Moxa provides a application analyzer that generates a report at the click of a button to help the system integrator easily identify potential issues and understand how to resolve them.

At the maintenance stage, system errors may require you to call for help. Device vendors might take a long time to troubleshoot issues because they need to collect information and then hold discussions with the technical support team. The NPort 6400-G2 comes with a one-click log collection function, which can provide all the data that a technical support team needs to quickly troubleshoot system issues.

  • SD Slot

    microSD card
    Up to 2 TB (high speed, 25 Mbps)

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

    1 to 3
    Auto MDI/MDI-X connection

  • Magnetic Isolation Protection

    1.5 kV (built-in)

  • Configuration Options

    Web Console (HTTP/HTTPS)
    Windows Utility
    Device Search Utility (DSU)
    MCC Tool
    Serial Console

  • Management

    ARP
    DHCP Client
    DNS
    HTTPS
    ICMP
    IPv4/IPv6
    SMTP
    SMTPS
    SNMPv1/v2c/v3
    SNTP
    TCP/IP
    UDP
    WINS

  • Windows Real COM Drivers

    Windows 11, 10, 8.1, 8, and 7
    Windows Server 2022, 2019, 2016, 2012 R2, 2012, and 2008 R2

  • Linux Real TTY Drivers

    Kernel versions 6.x, 5.x, and 4.x

  • Fixed TTY Drivers

    macOS versions: 14, 13, 12, and 11

  • Arm®-based Platform Support

    Windows 11
    Linux kernel 6.x, 5.x, and 4.x
    macOS 14, 13, 12, and 11

  • Virtual Machine

    VMWare ESXi (Windows 11/10/8.1/8/7 & Linux 6.x, 5.x, and 4.x)
    VMware Fusion (Windows on macOS 14, 13, 12, and 11)
    Parallels Desktop (Windows on macOS 14, 13, 12, and 11)

  • Time Management

    SNTP Client

  • MIB

    MIB-II
    RFC1213, RFC1317
    Private MIB

  • Unicast Routing

    RIPV1/V2
    Static Route

  • Root of Trust

    Secure Boot
    True Random Number Generator (TRNG)
    Security Screws

  • Authentication

    Local database
    RADIUS
    TACACS+

  • Security Protocols

    HTTPS (TLS 1.2/1.3)
    SNMPv3
    SSHv2

  • Encryption

    HTTPS: ECC-256, ECC-384, ECC-521, RSA-1024, RSA-2048, RSA-3072, RSA-4096, AES-128, AES-256, CHACHA20, SHA-256, SHA-384, HMAC

    SSH: ECC-256, ECC-384, ECC-521, RSA-2048, AES-128, AES-256, SHA-256, SHA-384, HMAC

    SNMPv3: AES-128, SHA-256, SHA-384

    Secure OP mode: HTTPS: ECC-256, ECC-384, ECC-521, RSA-1024, RSA-2048, RSA-3072, RSA-4096, AES-128, AES-256, CHACHA20, SHA-256, SHA-384, HMAC

    Config Import/Export: AES-256, SHA-256, HMAC

  • No. of Ports

    4

  • Connector

    DB9 male

  • Serial Standards

    RS-232
    RS-422
    RS-485

  • Secure Operation Modes

    Reverse SSH
    Secure Pair Connection
    Secure Real COM
    Secure TCP Client
    Secure TCP Server
    SSH
    Secure Redundant COM, Secure Reverse Real COM

  • Standard Operation Modes

    Disabled
    Pair Connection
    SLIP
    PPP
    Real COM
    Reverse Terminal
    RFC2217
    TCP Client
    TCP Server
    Terminal
    UDP
    Redundant COM, Reverse Real COM

  • Baudrate

    50 bps to 921.6 kbps (supports non-standard baudrates)

  • Data Bits

    5, 6, 7, 8

  • Stop Bits

    1, 1.5, 2

  • Flow Control

    None
    RTS/CTS
    DTR/DSR
    RTS Toggle
    XON/XOFF

  • Parity

    None, Even, Odd, Space, Mark

  • RS-485 Data Direction Control

    Automatic Data Direction Control (ADDC)

  • Terminator for RS-485

    120 ohms
    (software–configurable)

  • Pull High/Low Resistor for RS-485

    1 kilo-ohm, 150 kilo-ohms
    (software–configurable)

  • RS-232

    TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND

  • RS-422

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

  • RS-485-4w

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

  • RS-485-2w

    Data+, Data-, GND

  • Input Current

    373 mA (max.)

  • Input Voltage

    12 to 48 VDC

  • Automatic Reboot Trigger

    Built-in WDT

  • Alert Tools

    Built-in buzzer and RTC (real-time clock)

  • Housing

    Metal

  • Dimensions (with ears)

    158 x 114.4 x 30 mm (6.22 x 4.5 x 1.18 in)

  • Weight

    NPort 6450-G2: 538 g (1.186 lb)
    NPort 6450-2TX-G2: 546 g (1.204 lb)
    NPort 6450-G2-T: 522 g (1.151 lb)
    NPort 6450-2TX-G2-T: 530 g (1.168 lb)
    NPort 6450-2M/-2S-SC-G2-T: 535 g (1.179 lb)

  • Weight (including package)

    NPort 6450-G2: 900 g (1.984 lb)
    NPort 6450-2TX-G2: 908 g (2.002 lb)
    NPort 6450-G2-T: 690 g (1.521 lb)
    NPort 6450-2TX-G2-T: 698 g (1.539 lb)
    NPort 6450-2M/-2S-SC-G2-T: 705 g (1.554 lb)

  • Installation

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

  • Operating Temperature

    Standard models: -10 to 60°C (14 to 140°F)
    Standard models with power adapter (in the box): 0 to 40°C (32 to 104°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)

  • EMC

    EN 55032/35

  • EMI

    CISPR 32, FCC Part 15B Class A

  • EMS

    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: 0.5 kV
    IEC 61000-4-5 Surge: Power: 1 kV
    IEC 61000-4-6 CS: 3 V
    IEC 61000-4-8 PFMF
    IEC 61000-4-11

  • Safety

    IEC 62368-1
    UL 62368-1
    EN 62368-1

  • Traffic Control

    NEMA TS2

  • Vibration

    IEC 60068-2-6

  • Package Drop Test

    ISTA 1A

  • Green Product

    RoHS, CRoHS, WEEE

  • Time

    NPort 6450-G2: 29,716 hrs
    NPort 6450-2TX-G2: 29,713 hrs
    NPort 6450-2M-SC-G2-T: 2,664,201 hrs
    NPort 6450-2S-SC-G2-T: 2,664,201 hrs

  • Standards

    Telcordia Standard SR-332
    Telcordia SR-332 Issue 4

Support Documents

Name Type Version Release Date
Datasheet for NPort 6400-G2 Series
1.2 MB
Datasheet v1.1 Jan 28, 2026 Jan 28, 2026
FOSS Statement for Moxa PComm Lite Suite for Windows
108.5 KB
Declaration v1.0 Feb 07, 2025 Feb 07, 2025
FOSS Statement for Moxa CLI Configuration Tool
114.6 KB
Declaration v1.0 Dec 10, 2024 Dec 10, 2024
FOSS Statement for NPort macOS driver
108.4 KB
Declaration v1.0 Oct 29, 2024 Oct 29, 2024
FOSS Statement for Device Search Utility
161.8 KB
Declaration v1.0 Jun 24, 2024 Jun 24, 2024
FOSS Statement for Moxa Windows Driver Manager
255.8 KB
Declaration v1.0 Aug 01, 2022 Aug 01, 2022
FOSS Statement for Moxa Linux Driver
1.7 MB
Declaration v1.0 May 01, 2022 May 01, 2022

Available Models (6)

Show Images
moxa-nport-6450-g2-image.jpg | MoxaNPort 6450-G2moxa-nport-6450-2tx-g2-image.jpg | MoxaNPort 6450-2TX-G2moxa-nport-6450-g2-t-image.jpg | MoxaNPort 6450-G2-Tmoxa-nport-6450-2tx-g2-t-image.jpg | MoxaNPort 6450-2TX-G2-T
Ethernet Ports1 x 10/100M RJ453 x 10/100M RJ451 x 10/100M RJ453 x 10/100M RJ45
No. of Serial Ports4444
Serial StandardsRS-232/422/485RS-232/422/485RS-232/422/485RS-232/422/485
Power Adapter Included?
Operating Temp.-10 to 60°C-10 to 60°C-40 to 75°C-40 to 75°C
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moxa-nport-6450-2s-sc-g2-t-image.jpg | MoxaNPort 6450-2S-SC-G2-Tmoxa-nport-6450-2m-sc-g2-t-image.jpg | MoxaNPort 6450-2M-SC-G2-T
Ethernet Ports1 x 10/100M RJ45
2 x 100M Single-mode SC
1 x 10/100M RJ45
2 x 100M Multi-mode SC
No. of Serial Ports44
Serial StandardsRS-232/422/485RS-232/422/485
Power Adapter Included?
Operating Temp.-40 to 75°C-40 to 75°C
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