StarTech.com 3ft USB to RS232 DB9 Serial Adapter Cable - M/M

$37.91
$30.11 SAVE $7.80
206 availableas of 09/19/2026

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Should arrive by Thu, Oct 1 with free ground shipping

Compliance, certifications and origin

  • EU RoHS
  • WEEE
  • REACH
  • RoHS
  • Origin: China
Rated excellent by our customers Read our reviews

Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

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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 3ft USB to RS232 DB9 Serial Adapter Cable - M/M

The ICUSB232SM3 3ft USB to Serial Adapter Cable lets you connect DB9 RS232 serial devices to your Mac® or PC laptop or desktop computer through an available USB port, as though the computer offered an onboard DB9M connector.

Unlike typical USB to serial converter cables where the conversion takes place at the DB9 end, the StarTech.com ICUSB232SM3 features a converter chip on the USB end. Converting at the USB source overcomes the 15ft. technical limit of USB cables, allowing for a much greater serial DB-9 extension cable (50ft.+ is possible depending on the application) if necessary.

Simple to install and use, this USB to Serial adapter is a cost-effective solution that bridges the compatibility gap between modern computers and legacy serial peripherals.

Backed by a StarTech.com lifetime warranty and free lifetime technical support. The ICUSB232SM3 3ft USB to Serial Adapter Cable lets you connect DB9 RS232 serial devices to your Mac® or PC laptop or desktop computer through an available USB port, as though the computer offered an onboard DB9M connector. Unlike typical USB to serial converter cables where the conversion takes place at the DB9 end, the StarTech.com ICUSB232SM3 features a converter chip on the USB end. Converting at the USB source overcomes the 15ft. technical limit of USB cables, allowing for a much greater serial DB-9 extension cable (50ft.+ is possible depending on the application) if necessary. Simple to install and use, this USB to Serial adapter is a cost-effective solution that bridges the compatibility gap between modern computers and legacy serial peripherals. Backed by a StarTech.com lifetime warranty and free lifetime technical support.

The ICUSB232SM3 3ft USB to Serial Adapter Cable lets you connect DB9 RS232 serial devices to your Mac® or PC laptop or desktop computer through an available USB port, as though the computer offered an onboard DB9M connector.

Unlike typical USB to serial converter cables where the conversion takes place at the DB9 end, the StarTech.com ICUSB232SM3 features a converter chip on the USB end. Converting at the USB source overcomes the 15ft. technical limit of USB cables, allowing for a much greater serial DB-9 extension cable (50ft.+ is possible depending on the application) if necessary.

Simple to install and use, this USB to Serial adapter is a cost-effective solution that bridges the compatibility gap between modern computers and legacy serial peripherals.

Backed by a StarTech.com lifetime warranty and free lifetime technical support.

More from the manufacturer

Technical specifications

Technical Specifications of the StarTech.com 3ft USB to RS232 DB9 Serial Adapter Cable - M/M

General Information

General Information specifications
Manufacturer StarTech.com
Manufacturer Part Number ICUSB232SM3
Manufacturer Website Address http://www.startech.com
Brand Name StarTech.com
Product Name 3ft USB to RS232 DB9 Serial Adapter Cable - M/M
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 USB 2.0 Type A - Male
Cable Length 3 ft

Physical Characteristics

Physical Characteristics specifications
Color Family Black
Product Color Black
Weight (Approximate) 2.15 oz

Miscellaneous

Miscellaneous specifications
Package Contents
  • 3ft USB to RS232 DB9 Serial Adapter Cable - M/M
  • 1 x Driver Mini-CD
  • 2 x Cable Nut
  • 1 x Instruction Manual
Operating System Compatibility Mac OS X 10.6 Snow LeopardmacOS Big Sur 11.0Linux 2.4.x+ LTSmacOS Catalina 10.15Windows 8macOS Monterey 12.0Windows CE 5.2Windows CE 4.2Windows VistaWindows 8.1Windows 11Windows Server 2008 R2Windows Server 2012macOS Ventura 13.0Windows 7Windows Server 2019Windows Server 2003Windows Server 2022Windows 10Windows Server 2016
Additional Information OS Compatibility:
  • Windows® CE 4.2, 5.2, 98SE, ME, 2000, XP, Vista, 7, 8, 8.1, 10
  • Windows Server® 2003, 2008 R2, 2012, 2016, 2019
  • Mac OS® 10.6 to 10.14
  • Linux 2.4.x to 4.11.x LTS Versions only
Green Compliant Yes
Green Compliance Certificate / Authority EU RoHS
Country of Origin China
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/icusb232sm3_rohs.pdf
REACH Declaration URL https://media.startech.com/cms/pdfs/icusb232sm3_rohs.pdf
REACH free of SVHC Yes
WEEE Statement https://media.startech.com/cms/pdfs/icusb232sm3_weee.pdf

Warranty

Warranty specifications
Limited Warranty Lifetime

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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.

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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.