Antaira UTS-404A (K, -SI) Industrial 4-Port RS-232 to USB Converter, Surge Protected

Antaira UTS-404A Industrial 4-Port RS-232 to USB 2.0 Converter
Model: UTS-404A
Availability: IN STOCK

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Antaira UTS-404A 4-Port RS-232 to USB Converter, Optional Isolation and Locking Connectors

The UTS-404A adapter from Antaira Technologies aggregates four RS-232 ports to a single USB 2.0 interface. It was designed to connect legacy serial-based hardware to computers, laptops, and servers with a USB port but without a serial port. Screw-down DB-9 connectors and optional screw-down USB and power connectors prevent accidental disconnection. Built for industrial applications, the UTS-404A features a rugged metal enclosure and mounting flanges. The isolation option (UTS-404A-SI) offers surge protection for electrically noisy locations.

Plug-and-play software makes installation effortless. Install the cables and follow the steps of the software wizard. Your computer will recognize the converter and install the drivers automatically.

Key Features

  • Converts four RS-232 serial streams to a single USB with bi-directional transfers
  • 4 DB-9 serial connectors with locking screws
  • Rigid metal case with mounting flanges
  • Baud rate from 300 bps to 921.6 Kbps
  • Supports 7, 8 Data Bits and 1 or 2 stop bits
  • Odd, Even, Mark, Space, or None parity mode
  • Powered by the USB or optional 5 VDC power supply
  • Choose from 3 models
  • Optional 2500 Vrms surge & isolation protection (-SI)
  • Optional locking connectors for USB and power (-K)
  • USB cable included, power supply included with -SI option


UTS-404A, No Surge and Isolation Protection
UTS-402A-SI, Surge and Isolation with 2,500 Vrms and 15 KV ESD Protection, includes 5 VDC power supply
UTS-402AK, No Surge and Isolation protection with locking connectors

TypeSerial Connectivity
Operating System SupportWindows, Linux
USB Interface
USB VersionUSB 1.0, 1.1 and 2.0
Serial Interface
CategoryUSB Hubs & Adapters
Serial Ports4 RS-232
Baud Rate300bps ~ 921.6Kbps
Data Bits7, 8
Stop Bits1, 2
Power Consumption5 VDC, 250 mA ( max)
Input VoltagePower from USB; or External +5 VDC Power Jack
Surge Protection15KV ESD Protection (SI Model Only)
Isolation Protection2,500Vrms (SI Model Only)
CablingScrew Lock Mechanism
EnclosureMetal, IP30 Protection
Dimensions173.5 x 97.2 x 24.3 mm
Weight0.65 lbs.
MountingDIN-Rail or Wall Mounting
Operating Temperature0 to 55°C
Storage Temperature-20 to 85°C
Humidity5 to 95% non-condensing
CertificationsCE, FCC, RoHS
Warranty5 Years