Startech USB to RS232 Converter

  • RS Stock No. 179-7984
  • Mfr. Part No. ICUSB2321FIS
  • Manufacturer Startech
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): TW
Product Details

ICUSB2321FIS USB to Serial RS232 Adapter

The ICUSB2321FIS 1-Port FTDI USB to Serial RS232 Adapter Cable with Optical Isolation converts an available USB 1.1 or 2.0 port into an RS232 DB9 port that can be used to connect, monitor and control your serial devices.
The USB to serial adapter features integrated optical isolation circuits and surge protection to protect your critical, sensitive control equipment against electrical damage, making it a viable solution for costly industrial serial devices.
The versatile FTDI chipset also supports COM retention, additional customization/features, and compatibility not offered by most other solutions. Broad operating system compatibility including Windows®, Windows CE, Mac OS and Linux, makes this product easy to integrate into mixed environments.
Backed by a 2-year warranty and free lifetime technical support.

Features & Benefits

• USB to Straight-Through RS232 Serial Adapter
• Integrated 2500Vrms Optical Isolation Circuits
• 500W Bi-Directional Surge Protection Circuits
• Integrated FTDI USB UART Chip
• COM Port assignments maintained across reboot
• Compatible with Windows®, Mac OS and Linux
• Baud Rate up to 921.6 Kbps
• Powered by the USB port - no external power adapter required
• Designed to make serial port expansion quick and easy
• 8-foot cable length for connecting to devices without having to be too close
• Circuit isolation provides electrical protection for sensitive, and often expensive industrial equipment
• Portable USB-Powered design requires no bulky power adapter or outlet
• The FTDI chipset driver is highly customizable and broadly compatible, making it the ideal solution for any setup


• Perfect for IT Administrators looking to add legacy functionality to newer laptops, desktop computers and servers that lack an integrated RS232 port
• Connect, monitor and control industrial/automotive sensors and other sensitive equipment
• Connect bar code scanners, receipt printers and other point-of-sale devices
• Connect and program LED and Digital signage boards with serial communication ports
• Connect a satellite receiver, serial modem, or PDU

What’s in the package?

• USB to RS-232 Serial Adapter
• Driver CD
• Instruction Manual

Attribute Value
Input Port USB
Output Port RS232
Maximum Baud Rate 921.6kbit/s
4 In stock for delivery within 4 working days
Price Each
Was SGD211.84
SGD 208.94
(exc. GST)
SGD 223.57
(inc. GST)
Per unit
1 +
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