MOXA UPort 1250I USB to Serial Converter
- Model: UPort 1250I
MOXA UPort 1250I FEATURES
- 1 x USB 2.0 Port (Type B connector)
- 2 x RS-232/422/485 Serial ports (DB9 male connector)
- 2 KV Isolation protection for serial ports
- 5 VDC input power range
- Metal body design
- Compatible Driver with Windows, Linux, macOS
- 0 to 60°C operating temperature
MOXA UPort 1250I INTRODUCTION
The Moxa UPort 1250I is a compact USB-to-serial converter that enables reliable connectivity from an RS-232/422/485 device to the next generation of computer systems. The Moxa UPort 1250I is one solution in the larger category of Moxa UPort USB-to-serial converters and industrial USB hubs. There are a variety of applications for the UPort 1250I, including factory automation applications, monitoring applications, and configuring serial-based equipment. Ultimately, the Moxa UPort 1250I is an industrial-grade USB-to-serial converter that allows engineers and developers to continue utilizing legacy RS-232/422/485 devices through a USB interface. The Moxa UPort 1250I provides a cost-effective and sensible solution for industrial edge connectivity with stable communication and data transfer throughout the performance aspects of any diverse set of industrial automation and control systems.
Durable USB Connector Type A for Reliable Data Transfer
The Moxa UPort 1250I has a regular USB Type B connection,
making it reliable and easy to use with current computer equipment. The data
transfer speed reaches up to 12 Mbps using this USB to serial converter, which
provides a fast and stable communication capacity that is often required in
applications where a continuous flow of data is required in the industrial
space. With a reliable USB connection, the Moxa UPort 1250I allows for smooth
data flow between computing devices and connected serial devices. It will
ultimately provide a connection that is valued in industrial settings.
RS-232/422/485 Serial Standards for Compatibility
The UPort 1250I comes with two serial ports that are
compliant with RS-232/422/485 serial standards and the 2kV isolation for deeper
efficiency. This serial port is significantly useful in a broad range of
industrial controllers, legacy machines, and serial-based monitoring devices.
Engineers and developers working with legacy RS-232/422/485 equipment benefit
from the Moxa UPort 1250I’s ability to seamlessly bridge older technology with
modern USB-based systems. By using this device, they ensure flexibility and
interoperability in diverse industrial networks.
Sturdy ABS and PC Housing for Tough Environments
The Moxa UPort 1250I USB-to-serial converter has a durable,
rugged ABS and polycarbonate enclosure design. The enclosure protects the unit
during use in an industrial environment involving vibration, mechanical stress,
and temperature fluctuations. This Moxa UPort 1250I supports an operating
temperature range from 0 to 55°C (32 to 131°F) and can be stored in the
temperature range of -20 to 70°C (-4 to 158°F). This durable enclosure enhances
durability and service life in demanding environments for use in industrial
automation and control.
You can also find the UPort 1410, UPort 1250, and UPort 1650-16 models in the MOXA UPort 1200/1400/1600.
MOXA UPort 1250I CERTIFICATIONS
The Moxa UPort 1250I USB-to-serial converter guarantees the
safety and reliability of the device in industrial settings by meeting global
standards. This industrial USB-to-serial converter is certified for EMC, EMI,
and EMS to demonstrate strong resistance to electromagnetic interference and
maintain stable performance in electrically noisy environments. In addition,
CE, FCC, and UL certifications confirm its adherence to international safety
and performance requirements. For engineers and system integrators requiring
detailed technical information, the Moxa UPort 1250I datasheet provides
complete specifications and compliance documentation. By meeting these rigorous
certifications, the UPort 1250I establishes itself as a trusted solution for
industrial applications that demand reliable USB-to-serial connectivity.

| USB-to-Serial : USB Interface | |
| Number of Ports | 1 Port |
| USB Connector | USB type B |
| USB Standards | USB 1.1/2.0 compliant |
| Speed | 12 Mbps, 480 Mbps |
| USB-to-Serial : Serial Interface | |
| Total number of serial ports | 2 x RS-232/422/485 Ports |
| Serial connection type | DB9-M with a mini DB9-F converter to the terminal |
| Serial Communication Parameters | Data Bits : 5, 6, 7, 8 and Stop Bits : 1, 1.5, 2 and Parity : None, Even, Odd, Space, Mark |
| Flow Control | RTS/CTS, XON/XOFF, None |
| FIFO | 128bytes |
| Data transfer speed ( Baudrate ) | 50 bps to 921.6 kbps |
| Electrical isolation | Yes : 2KV |
| USB-to-Serial : Compatible Operating Systems | |
| Windows Drivers | Windows 11/10/8.1/8/7/Vista/XP/ME/98/95, Windows Server 2022/2019/2016/2012 R2/2012/2008 R2/2008/2003/2000/NT |
| Linux Drivers | Kernel versions: 6.x, 5.x, 4.x, 3.x, 2.6.x and 2.4.x |
| Mac Drivers | macOS versions: 10.12 to 10.15, 11.x |
| USB-to-Serial : 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 |
| USB-to-Serial : Power Requirements | |
| Input Voltage | 5 VDC |
| Input Current | 200 mA @ 12 VDC |
| USB-to-Serial : General | |
| MTBF | 563,179 hrs |
| USB-to-Serial : Physical Characteristics | |
| Dimensions | 77 x 26 x 111 mm (3.03 x 1.02 x 4.37 in) |
| Housing | Metal |
| 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, IEC 61000-4-6 CS: 150 kHz to 80 MHz: 3 V/m, IEC 61000-4-8 PFMF; Safety: UL 60950-1; Green Product: RoHS, CRoHS, WEEE; Telcordia (Bellcore) Standard |
| Operating Temperature | 0 to 60°C (32 to 140°F) |
| Storage Temperature | -20 to 75°C (-4 to 167°F) |
| Operation Humidity | 5 to 95% (non-condensing) |
| Weight | 180 g (0.40 lb) |