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UPort 1200-G2 Series

2-port RS-232/422/485 USB-to-serial converters

Features and Benefits

  • USB 3.2 SuperSpeed capability
  • 50 bps to 921.6 kbps baudrate (nonstandard baudrates supported)
  • 512-byte on-chip FIFO cache and flow control for enhanced performance
  • Double-sided LEDs located at the corners show power, TX, and RX statuses in either directions
  • Drivers provided for a broad selection of operating systems, including Windows and Linux
  • Latching USB cable design for firmer connection
  • Wide operating temperature models available for -40 to 75°C (-40 to 167°F) environments
  • Serial port with 2 kV isolation protection (for “-I” models)
Certifications
Overview
Specifications
Resources
Models
Contact Sales

Introduction

The UPort® 1200-G2 Series USB-to-serial converters are ideal for laptop or workstation computers that need serial port expansion. They are essential for computers which need to connect different serial devices in the field or need separate interface converters for devices without a standard COM port or DB9 connector. The computers also come with a USB cable that has a latch and screw lock for a more secure connection between the UPort and your computer. The UPort® 1200-G2 Series converts from USB to RS-485. All products are compatible with legacy serial devices and can be used with instrumentation and point-of-sale applications.

  • USB Standards

    USB 3.2 Gen 1
    USB 1.1/2.0 compliant

  • Speed

    5 Gbps, 480 Mbps, 12 Mbps

  • No. of USB Ports

    1

  • USB Connector

    USB Type B

  • Connector

    DB9 male

  • Baudrate

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

  • FIFO

    512 bytes

  • Parity

    None, Even, Odd, Space, Mark

  • Data Bits

    5, 6, 7, 8

  • Stop Bits

    1, 1.5, 2

  • Pull High/Low Resistor for RS-485

    1 kilo-ohm, 150 kilo-ohms

  • Terminator for RS-485

    120 ohms

  • Flow Control

    RTS/CTS, XON/XOFF

  • RS-485 Data Direction Control

    Automatic Data Direction Control (ADDC)

  • Surge

    0.5 kV

  • Isolation

    2 kV (I models)

  • Serial Standards

    RS-232/422/485

  • No. of Ports

    2

  • 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

  • Windows Drivers

    Windows 11, 10, 8.1, 8, 7, Vista and XP
    Windows Server 2022, 2019, 2016, 2012 R2, 2012, 2008 R2, 2008 and 2000

  • Linux Drivers

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

  • Mac Drivers

    macOS version (Intel 64): 13, 12, 11 and 10.1x

  • Virtual Machine

    VMware Fusion (Windows on macOS 13, 12, 11, 10.1x, Intel 64)
    VMWare ESXi (Linux kernel 4)
    Parallels Desktop (Windows on macOS 13, 12, 11, 10.1x, Intel 64)

  • Arm®-based Platform Support

    Linux kernel 6.x, 5.x and 4.x

  • Android API

    Android 3.1.x and later

  • Input Voltage

    5 VDC by USB bus power

  • Input Current

    UPort 1250-G2 models
    320 mA @ USB 3
    160 mA @ USB 2

    UPort 1250I-G2 models:
    400 mA @ USB 3
    240 mA @ USB 2

  • Housing

    Metal

  • IP Rating

    IP20

  • Dimensions

    75.8 x 25.0 x 111.0 mm (2.98 x 0.98 x 4.37 in)

  • Weight

    UPort 1250-G2 models: 259 g (0.57 lb)
    UPort 1250I-G2 models: 263 g (0.58 lb)

  • Operating Temperature

    Standard models: 0 to 60°C (32 to 140°F)
    -T models: -40 to 75°C (-40 to 167°F)

  • Storage Temperature

    -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
    IEC 61000-4-5 Surge: Power: 1 kV, Signal: 0.5 kV
    IEC 61000-4-6 CS: 3 kHz to 150 MHz; Signal: 80 V
    IEC 61000-4-8 PFMF

  • Safety

    IEC 62368-1
    EN 62368-1
    UL 62368-1 (CB)
    KC

  • Freefall

    IEC 60068-2-31

  • Vibration

    IEC 60068-2-6
    IEC 60068-2-64

  • Shock

    IEC 60068-2-27

  • Green Product

    RoHS, CRoHS, WEEE

  • Standards

    Telcordia Standard SR332

  • Time

    UPort 1250-G2 models: 2,142,392 hrs
    UPort 1250I-G2 models: 1,793,060 hrs

Software, Firmware, and Drivers

FILTER

All Driver Utility
Name Type Checksum Version Operating System Release Date
Driver for UPort 1200/1400/1600/1200-G2/1400-G2/1600-8-G2 Series (Windows 7 to 10 and Windows Server 2008 R2 to 2019, WHQL certified) Download
11.6 MB 		Driver
SHA-512
v3.4
  • Windows 10
  • Windows 7
  • Windows 8
  • Windows 8.1
  • Windows Server 2008 R2
  • Windows Server 2012
  • Windows Server 2012 R2
  • Windows Server 2016
  • Windows Server 2019
 Jan 21, 2026 Jan 21, 2026 Release notes
PComm Lite - Serial Communication Tool Download
5.3 MB 		Utility
SHA-512
v1.9
  • Windows
 Dec 12, 2025 Dec 12, 2025 Release notes
Driver for UPort 1200/1400/1600/1200-G2/1400-G2/1600-8-G2 Series (Linux kernel 4.x) Download
4.7 MB 		Driver
SHA-512
v4.3
  • Linux Kernel 4.x
 Oct 02, 2025 Oct 02, 2025 Release notes
Driver for UPort 1200/1400/1600/1200-G2/1400-G2/1600-8-G2 Series (Linux kernel 6.x) Download
4.6 MB 		Driver
SHA-512
v6.2
  • Linux Kernel 6.x
 Oct 02, 2025 Oct 02, 2025 Release notes
Driver for UPort 1200/1400/1600/1200-G2/1400-G2/1600-8-G2 Series (Linux kernel 5.x) Download
4.6 MB 		Driver
SHA-512
v5.3
  • Linux Kernel 5.x
 Oct 02, 2025 Oct 02, 2025 Release notes
Driver for UPort 1200/1400/1600/G2 Series (Windows XP or Windows Server 2008 and prior, WHQL certified) Download
1.4 MB 		Driver
SHA-512
v2.1
  • Windows 2000
  • Windows Server 2003
  • Windows Server 2008
  • Windows Vista
  • Windows XP
 Mar 07, 2024 Mar 07, 2024 Release notes
Driver for UPort 1200/1400/1600/1200-G2/1400-G2/1600-8-G2 Series (Windows 11 and Windows Server 2022 and later, WHQL certified) Download
8.6 MB 		Driver
SHA-512
v4.1
  • Windows
  • Windows 11
  • Windows Server 2022
 Oct 13, 2023 Oct 13, 2023 Release notes
Driver for UPort 1200/1400/1600/1200-G2/1400-G2/1600-8-G2 Series (macOS 10.12 to 13) Download
413.6 KB 		Driver
SHA-512
v1.1
  • macOS 10.12
  • macOS 10.13
  • macOS 10.14
  • macOS 10.15
  • macOS 11
  • macOS 12
  • macOS 13
 Oct 13, 2023 Oct 13, 2023 Release notes

Support Documents

FILTER

All Datasheet Declaration Manual QIG Tech Note
Name Type Version Release Date
Datasheet for UPort 1200-G2 Series Download
1.0 MB 		Datasheet v1.2 Mar 25, 2026 Mar 25, 2026
Manual for UPort 1200-G2/1400-G2/1600-8-G2 Series Download
10.7 MB 		Manual v2.2 Jul 30, 2025 Jul 30, 2025
FOSS Statement for Moxa ViewCOM for Windows Download
139.9 KB 		Declaration v1.0 Feb 07, 2025 Feb 07, 2025
FOSS Statement for Moxa PComm Lite Suite for Windows Download
108.5 KB 		Declaration v1.0 Feb 07, 2025 Feb 07, 2025
FOSS Statement for UPort 1200, 1400, 1600, 1200-G2, 1400-G2 and 1600-8-G2 Series macOS Driver Download
115.8 KB 		Declaration v1.0 Oct 29, 2024 Oct 29, 2024
FOSS Statement for UPort 1200, 1400, 1600, 1200-G2, 1400-G2 and 1600-8-G2 Series Windows Driver Download
187.6 KB 		Declaration v1.0 Oct 29, 2024 Oct 29, 2024
QIG for UPort 1200-G2 Series Download
3.1 MB 		QIG v1.0 Jan 31, 2024 Jan 31, 2024
Declaration of Conformity for UPort 1200-G2 Series Download
307.9 KB 		Declaration v1.0 Jan 25, 2024 Jan 25, 2024
Tech Note: UPort Driver Arm-based Platform Porting Guide Download
423.1 KB 		Tech Note v1.2 Oct 13, 2023 Oct 13, 2023

Related Content

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Available Models (4)

Show Images
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moxa-uport-1250-g2-image.jpg | MoxaUPort 1250-G2
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moxa-uport-1250-g2-t-image.jpg | MoxaUPort 1250-G2-T
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moxa-uport-1250i-g2-image.jpg | MoxaUPort 1250I-G2
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moxa-uport-1250i-g2-t-image.jpg | MoxaUPort 1250I-G2-T
Serial StandardsRS-232/422/485RS-232/422/485RS-232/422/485RS-232/422/485
No. of Serial Ports2222
Isolation--2 kV2 kV
Power InputUSB bus powerUSB bus powerUSB bus powerUSB bus power
Operating Temp.0 to 60°C-40 to 75°C0 to 60°C-40 to 75°C
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