UPort 1110

1-port RS-232 USB-to-serial converters

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Evaluation units available for online purchase
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Features and Benefits

  • Compatible with USB 2.0
  • 12 Mbps USB data rate
  • 921.6 kbps maximum baudrate for super fast data transmission
  • Drivers provided for Windows, WinCE, and Linux
  • Mini DB9 female to terminal block adapter for easy wiring
  • LEDs for indicating USB and TxD/RxD activity
  • 2 kV electrical isolation (UPort 1130I and 1150I)


The UPort® 1100 series USB-to-serial converters are the perfect accessory for laptop computers that do not have a serial port, and are essential for engineers who need to connect different serial devices in the field or separate interface converters for devices without a standard COM port or DB9 connector. The UPort® 1110 converts from USB to RS-232, the UPort® 1130/1130I from USB to RS-422/485, and the UPort® 1150 from USB to RS-232/422/485. All products are compatible with new and legacy serial devices, and can be used with mobile, instrumentation, and point-of-sale applications.


Typical Application—Surveillance Monitoring System

The most basic video surveillance setup consists of a single camera connected directly to a monitor and recording device. However, many businesses require video surveillance on a larger scale requiring a dedicated management system. Existing management systems often lack device-port versatility, making converters a necessity when connecting different devices.  Management systems needing USB-to-serial converters for serial devices such as card readers, modems, video cameras, and sensors, now have a simple solution.  Moxa’s UPort® 1110/1150 converters provide plug-and-play serial device connectivity without having to install new adapter boards, which usually requires opening of computer/server chassis.  Also, a unique driver allows the UPort® 1110/1150 to retain COM port numbers when they have been  unplugged and then reconnected again, even into a new USB port.
UPort® 1110/1150 convenient characteristics include: 

  • USB 2.0 compatibility 
  • RS-232 or RS-422/485 interface 
  • Stability and reliability 
  • Cost-effective
  • Plug-and-play  
  • Easy to use 




USB Interface
Compliance USB 1.0/1.1 compliant, USB 2.0 compatible
Connector USB Type A
Speed 12 Mbps (Full-Speed USB)
Serial Interface
Number of Ports 1
Serial Standards RS-232
Connector DB9 male
Electrical Isolation 2 kV (UPort 1130I and 1150I)
Baudrate 50 bps to 921.6 kbps
Serial Communication Parameters
Data Bits 5, 6, 7, 8
Stop Bits 1, 1.5, 2
Parity None, Even, Odd, Space, Mark
Flow Control RTS/CTS, XON/XOFF
FIFO 64 bytes
Serial Signals
RS-422 TxD+(B), TxD-(A), RxD+(B), RxD-(A), GND
RS-485-4w TxD+(B), TxD-(A), RxD+(B), RxD-(A), GND
RS-485-2w Data+(B), Data-(A), GND
RS-485 Data Direction ADDC® (Automatic Data Direction Control)
Operating Systems
Windows Real COM Drivers Windows 95/98/ME/NT/2000, Windows XP/2003/Vista/2008/7/8/8.1/10 (x86/x64), Windows 2012 (x64), Windows Embedded CE 5.0/6.0
Linux Real TTY Drivers Linux 2.4.x, 2.6.x, 3.x 
Note: Please refer to Moxa’s website for the latest driver support information.
Physical Characteristics
Housing ABS + PC
Weight Product only: 65 g (0.14 lb)
Packaged: 200 g (0.44 lb)
Dimensions 37.5 x 20.5 x 60 mm (1.48 x 0.81 x 2.36 in)
Environmental Limits
Operating Temperature 0 to 55°C (32 to 131°F)
Storage Temperature -20 to 70°C (-4 to 158°F)
Ambient Relative Humidity 5 to 95% (non-condensing)
Standards and Certifications
EMC EN 55022/24
EMI CISPR 22, FCC Part 15B Class B
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: 2 kV
IEC 61000-4-6 CS: 150 kHz to 80 MHz: 3 V/m
IEC 61000-4-8 PFMF
Power Requirements
Input Voltage 5 VDC
Input Current 30 mA @ 5 VDC
MTBF (mean time between failures)
Time 1,949,025 hrs
Standard Telcordia (Bellcore), GB
Warranty Period 5 years
Details See www.moxa.com/warranty

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Available Models

  Model No. Description
UPort 1110 1-port RS-232 USB-to-serial converter

Optional Accessories

  Model No. Description
Mini DB9F-to-TB DB9 Female to Terminal Block connector