StarTech.com 1 Port FTDI USB to Serial RS232 Adapter Cable with Optical Isolation

$130.16
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23 availableas of 09/16/2026

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Should arrive by Thu, Oct 1 with free ground shipping

Compliance, certifications and origin

  • TAA compliant
  • EU RoHS
  • WEEE
  • REACH
  • RoHS
  • Origin: Taiwan
Rated excellent by our customers Read our reviews

Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

Overview

About the StarTech.com 1 Port FTDI USB to Serial RS232 Adapter Cable with Optical Isolation

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 StarTech.com 2-year warranty and free lifetime technical support. 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 StarTech.com 2-year warranty and free lifetime technical support.

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 StarTech.com 2-year warranty and free lifetime technical support.

More from the manufacturer

Technical specifications

Technical Specifications of the StarTech.com 1 Port FTDI USB to Serial RS232 Adapter Cable with Optical Isolation

General Information

General Information specifications
Manufacturer StarTech.com
Manufacturer Part Number ICUSB2321FIS
Manufacturer Website Address http://www.startech.com
Brand Name StarTech.com
Product Name 1 Port FTDI USB to Serial RS232 Adapter Cable with Isolation
Packaged Quantity 1 Each
Product Type Data Transfer Adapter

Technical Information

Technical Information specifications
Connector Gender on First End Male
Connector Type on First End DB-9 RS-232 Serial - Male
Connector on First End Details 1 x 9-pin DB-9 RS-232 Serial - Male
Connector Type on Second End USB 2.0 Type A - Male
Connector Gender on Second End Male
Connector on Second End Details 1 x 4-pin USB 2.0 Type A - Male
Features Surge Protection
Cable Length 8.20 ft

Physical Characteristics

Physical Characteristics specifications
Color Family Black
Product Color Black
Weight (Approximate) 3.80 oz

Miscellaneous

Miscellaneous specifications
Package Contents
  • 1 Port FTDI USB to Serial RS232 Adapter Cable with Isolation
  • 1 x Driver CD
  • 1 x Instruction Manual
Operating System Compatibility Mac OS X 10.6 Snow LeopardmacOS Big Sur 11.0Windows Server 2012 R2Windows XPWindows 8Windows 2000 ServerWindows CE 6.0Windows Server 2019Windows CE 4.2Windows Server 2016macOS Monterey 12.0Windows Server 2012Linux Kernel 3.0.x+ LTSmacOS Catalina 10.15Windows Server 2022Windows Server 2008 R2Windows 8.1Windows VistaWindows 10Windows Server 2003Windows 98 Second EditionWindows CE 5.0macOS Ventura 13.0Windows 7Windows XP EmbeddedWindows 11
Certifications & Standards
  • CE
  • FCC
  • WHQL
Green Compliant Yes
Green Compliance Certificate / Authority EU RoHS
Country of Origin Taiwan
TAA Compliant Yes
Environmental Compliance Waste Electrical and Electronic Equipment Directive (WEEE)Registration, Evaluation, Authorization and Restriction of Chemicals (REACH)Restriction of Hazardous Substances (RoHS) 2
End of Life Manual Availability Yes
EU RoHS Declaration URL https://media.startech.com/cms/pdfs/icusb2321fis_rohs.pdf
REACH Declaration URL https://media.startech.com/cms/pdfs/icusb2321fis_rohs.pdf
REACH free of SVHC Yes
WEEE Statement https://media.startech.com/cms/pdfs/icusb2321fis_weee.pdf

Warranty

Warranty specifications
Limited Warranty 2 Year

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Free shipping on most items when you spend $100 or more. In-stock items ship on the next open shipment slot. The buy box above shows the live order-by countdown and the estimated arrival date.

Need to send it back? Start a return online with a Request RMA and our team will take care of you. Keep the original packaging. Items must be returned in the condition received.

Questions about shipping or returns? Chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.