Moxa
UPort 1250I-G2-T

UPort 1250I-G2-T

UPort 1200-G2 Series

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

  • 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 CE · FCC · UL Listed · KC

Ships from and sold by A5 IT, an authorized Moxa reseller.

Specifications

USB Interface

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

Serial Interface

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

Serial Signals

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

Serial Software Features

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

Power Parameters

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

Physical Characteristics

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
263 g (0.58 lb)

Environmental Limits

Operating Temperature
-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)

Standards and Certifications

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

Declaration

Green Product
RoHS, CRoHS, WEEE

MTBF

Standards
Telcordia Standard SR332
Time
1,793,060 hrs

Documentation

NameTypeVersionDate
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)11.6 MBDriverv3.4Jan 21, 2026 Jan 21, 2026 Release notes
PComm Lite - Serial Communication Tool5.3 MBUtilityv1.9Dec 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)4.7 MBDriverv4.3Oct 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)4.6 MBDriverv5.3Oct 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)4.6 MBDriverv6.2Oct 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)1.4 MBDriverv2.1Mar 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)8.6 MBDriverv4.1Oct 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)413.6 KBDriverv1.1Oct 13, 2023 Oct 13, 2023 Release notes
FOSS Statement for UPort 1200, 1400, 1600, 1200-G2, 1400-G2 and 1600-8-G2 Series Linux Driver v4.3145.7 KBDeclarationv1.0May 18, 2026
FOSS Statement for UPort 1200, 1400, 1600, 1200-G2, 1400-G2 and 1600-8-G2 Series Linux Driver v5.3143.6 KBDeclarationv1.0May 18, 2026
FOSS Statement for UPort 1200, 1400, 1600, 1200-G2, 1400-G2 and 1600-8-G2 Series Linux Driver v6.2143.6 KBDeclarationv1.0May 18, 2026
Datasheet for UPort 1200-G2 Series1.0 MBDatasheetv1.2Mar 25, 2026
QIG for UPort 1200-G2 Series3.2 MBQIGv1.1Mar 09, 2026
Manual for UPort 1200-G2/1400-G2/1600-8-G2 Series10.7 MBManualv2.2Jul 30, 2025
FOSS Statement for Moxa PComm Lite Suite for Windows108.5 KBDeclarationv1.0Feb 07, 2025
FOSS Statement for Moxa ViewCOM for Windows139.9 KBDeclarationv1.0Feb 07, 2025
FOSS Statement for UPort 1200, 1400, 1600, 1200-G2, 1400-G2 and 1600-8-G2 Series Windows Driver187.6 KBDeclarationv1.0Oct 29, 2024
FOSS Statement for UPort 1200, 1400, 1600, 1200-G2, 1400-G2 and 1600-8-G2 Series macOS Driver115.8 KBDeclarationv1.0Oct 29, 2024
Declaration of Conformity for UPort 1200-G2 Series307.9 KBDeclarationv1.0Jan 25, 2024
Tech Note: UPort Driver Arm-based Platform Porting Guide423.1 KBTech Notev1.2Oct 13, 2023

Other models in the UPort 1200-G2 Series