Some cookies are essential to ensure our website works for you. You may block or delete all cookies from this site but parts of the site may not work. To find out more about how we use cookies, see our privacy statement.

OK

×

Are you in the United States?

Visit our U.S.A. & International site for relevant pricing, distribution and product availability information.

Go to StarTech.com

Browse Products...

USB to RS232 DB9/DB25 Serial Adapter Cable - M/M

Product ID: ICUSB232DB25

Add an RS232 serial port to a notebook or desktop computer with this Plug-and Play USB adapter cable

Features
  • USB powered; No external power adapters needed

  • Supports serial transfer speeds up to 250Kbps

  • Includes a DB9 to DB25 pin adapter for 25-pin RS232 serial communication

More Features . . .
  • Supports USB transfer speeds up to 12Mbps

  • Plug-and-Play and Hot Swap Support

  • Windows certified (WHQL) drivers

  • 3ft cable length

  • Supports remote wake-up from Modem input signals and USB power management

  • Compliant with USB Rev. 2.0 Full-Speed specification

  • Electronics Industries Association (EIA) standard RS-232-C compliant

  • USB to Straight-Through RS232 Serial Adapter

Prices may be lower from Resellers:

CDWC MEMEXP ISTC TIGERC NEGGCA DIRD_C STAPCA

Retailers

MICAGE STAPCA
INGC TECHDC SYNN ASICA DANC
Available in
$27.99 CDN

ID: ICUSB232DB25

May be in stock with Resellers/Distributors


Reseller Pricing: Create an Account

Volume Order? Request a quote

The ICUSB232DB25 USB to RS232 DB9/DB25 Serial Adapter Cable (M/M) lets you connect 9-pin (DB9) or 25-pin (DB25) RS232 serial devices to your laptop or desktop computer through a USB port, as though the computer offered an onboard serial port. The integrated 3-foot (0.9 meter) cable allows it to be connected directly from the serial device to the computer without requiring additional cables.

A cost-effective solution that bridges the compatibility gap between modern computers and legacy serial peripherals, this high quality USB/RS232 Serial Adapter cable ships with a DB-9 to DB-25 adapter for connection to varied serial equipment.

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

The StarTech.com Advantage
  • This versatile device ships with a 9-pin connector, and a 25-pin RS232 adapter for a variety of connection options
  • Integrated 3ft cable allows you to connect directly to your serial devices
  • Plug-and-Play/Hot-swap support enables you to add and remove this adapter without having to reboot the computer
Common Customer Questions

View FAQs...

Compatible With

View full OS compatibility

Windows® PocketPC 2003 / 2000, Windows Mobile 5/6, CE 4.2/5.2, Embedded System 2009, XP Embedded, POS Ready 2009, 98SE, 2000, ME, XP, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2016
Mac OS X® 10.6 to 10.13
Linux 2.4.x to 4.11.x LTS Versions only

Applications
  • Ideal for connecting serial devices to laptops or tablet PCs through the USB port
  • Connect to and monitor/control industrial sensors
  • Connect bar code scanners and other serial devices to a USB port
  • Connect a serial modem, digital camera, or PDA with serial sync to your PC's USB port
  • Connect to automotive ODB/ODBII sensor adapters that use serial connectivity
Product Numbers
Warranty Information
Warranty 2 Years
Hardware
Bus Type USB 2.0
Chipset ID Prolific - PL2303
Interface Serial
Port Style Cable Adapters
Ports 1
Performance
Data Bits 4, 5, 6, 7, 8
FIFO 512 Bytes
Flow Control None, Xon/ Xoff, Hardware
Max Baud Rate 230.4 Kbps
Parity None, Even, Odd, Mark, Space
Serial Protocol RS-232
Stop Bits 1, 1.5, 2
Connector(s)
Connector Type(s) 1 - USB Type-A (4 pin) USB 2.0 Male
External Ports 1 - DB-25 (25 pin, D-Sub) Male
1 - DB-9 (9 pin, D-Sub) Male
Software
Microsoft WHQL Certified Yes
OS Compatibility Windows® PocketPC 2003 / 2000, Windows Mobile 5/6, CE 4.2/5.2, Embedded System 2009, XP Embedded, POS Ready 2009, 98SE, 2000, ME, XP, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2016
Mac OS X® 10.6 to 10.13
Linux 2.4.x to 4.11.x LTS Versions only
Environmental
Humidity 5~85% RH
Operating Temperature 0°C to 70°C (32°F to 158°F)
Storage Temperature -40°C to 85°C (-40°F to 185°F)
Physical Characteristics
Cable Length 3 ft [0.9 m]
Color Gray
Enclosure Type Plastic
Product Length 3 ft [0.9 m]
Product Weight 2.5 oz [70 g]
Packaging Information
Shipping (Package) Weight 3.2 oz [90 g]
What's in the Box
Included in Package 1 - 3ft USB to RS232 Cable
1 - DB9 to DB25 Serial Adapter
1 - Driver CD
1 - Manual
1 Port Professional USB to Serial Adapter Cable with COM Retention
ICUSB2321X

1 Port Professional USB to Serial Adapter Cable with COM Retention

Add one serial RS-232 port with com retention to any laptop or computer with a USB port

$57.99

In stock:   Canada: 57  |  USA: 24

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

2 Port Wall Mountable USB to Serial Adapter Hub with COM Retention
ICUSB2322X

2 Port Wall Mountable USB to Serial Adapter Hub with COM Retention

Add 2 serial RS-232 ports to any laptop or computer with a USB port

$82.99

In stock:   Canada: 9  |  USA: 29

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

4 Port USB to RS232 Serial DB9 Adapter Hub
ICUSB2324

4 Port USB to RS232 Serial DB9 Adapter Hub

Add four RS232 serial ports to any notebook or desktop computer using a single USB port

$121.99

In stock:   Canada: 21  |  USA: 0
4 Port Wall Mountable USB to Serial Adapter Hub with COM Retention
ICUSB2324X

4 Port Wall Mountable USB to Serial Adapter Hub with COM Retention

Add 4 serial RS-232 ports to any laptop or computer with a USB port

$143.99

In stock:   Canada: 18  |  USA: 117

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

8 Port USB to RS232 Serial DB9 Adapter Hub
ICUSB2328

8 Port USB to RS232 Serial DB9 Adapter Hub

Add eight RS232 serial ports to any notebook or desktop computer using a single USB port

$282.99

In stock:   Canada: 8  |  USA: 55

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

2 Port USB to RS232 Serial DB9 Adapter Cable
ICUSB232C2

2 Port USB to RS232 Serial DB9 Adapter Cable

Add 2 serial RS-232 ports to any laptop or computer with a USB port

$61.99

In stock:   Canada: 6  |  USA: 556

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

USB to RS232 DB9 Serial Adapter Cable with COM Retention
ICUSB232PRO

1 ft USB to RS232 Serial DB9 Adapter Cable with COM Retention

Add an RS-232 serial port to your laptop or desktop computer through USB; features COM port retention

$36.99

In stock:   Canada: 614  |  USA: 1450

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

6 ft Professional RS422/485 USB Serial Cable Adapter w/ COM Retention
ICUSB422

6 ft Professional RS422/485 USB Serial Cable Adapter w/ COM Retention

Add an RS422/485 serial port to your system through USB; features COM port retention

$91.99

In stock:   Canada: 24  |  USA: 441

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

Metal Industrial USB to RS422/RS485 Serial Adapter w/ Isolation
ICUSB422IS

1 Port Metal Industrial USB to RS422/RS485 Serial Adapter w/ Isolation

Add an R422/485 serial port to your laptop or desktop computer through USB

$171.99

In stock:   Canada: 10  |  USA: 63

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

1 Port RS232 Serial Ethernet Device Server - PoE Power Over Ethernet
NETRS2321POE

1 Port RS232 Serial Ethernet Device Server - PoE Power Over Ethernet

Connect to, configure and remotely manage an RS-232 serial device over an IP network

$205.99

In stock:   Canada: 8  |  USA: 158

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

6 ft DB25 to DB9 Serial Modem Cable - M/F
MC6MF

6 ft DB25 to DB9 Serial Modem Cable - M/F

Connect your computer’s serial port to a modem or switchbox

$11.99

In stock:   Canada: 172  |  USA: 281

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

6ft Straight Through Serial Cable - DB9 M/F
MXT100

6ft Straight Through Serial Cable - DB9 M/F

Extend your EGA monitor cable or mouse cable by 6ft

$10.99

In stock:   Canada: 588  |  USA: 3707

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

25 ft Straight Through Serial Cable - DB9 M/F

$15.99

In stock:   Canada: 87  |  USA: 609

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

11 ft Straight Through Serial Cable - M/F
MXT10010

10 ft Straight Through Serial Cable - M/F

Extend your EGA monitor cable or mouse cable by 10ft

$10.99

In stock:   Canada: 149  |  USA: 3468

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

6 ft Straight Through Serial Cable - DB9 F/F
MXT100FF

6 ft Straight Through Serial Cable - DB9 F/F

Connect two DB9 equipped serial devices

$10.99

In stock:   Canada: 345  |  USA: 3019

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

15 ft Straight Through Serial Cable - DB9 M/F
MXT106

15 ft Straight Through Serial Cable - DB9 M/F

Extend the connection between your DB9 serial devices by up to 15ft

$13.99

In stock:   Canada: 8  |  USA: 216

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

6 ft Straight Through DB25 Serial/Parallel Cable - M/F

$11.99

In stock:   Canada: 14  |  USA: 358

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

6 ft DB9-DB25 Laplink Serial Cable
SCNM6LINK

6 ft DB9-DB25 Laplink Serial Cable

Connect your serial devices, and transfer your files

$10.99

In stock:   Canada: 31  |  USA: 39

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

10 ft Cross Wired DB9 to DB25 Serial Null Modem Cable - F/M
SCNM925FM

10 ft Cross Wired DB9 to DB25 Serial Null Modem Cable - F/M

Connect your serial devices, and transfer your files

$10.99

In stock:   Canada: 217  |  USA: 3489

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

10 ft DB9 RS232 Serial Null Modem Cable F/F
SCNM9FF

10 ft DB9 RS232 Serial Null Modem Cable F/F

Transfer files via serial connection

$10.99

In stock:   Canada: 688  |  USA: 4946

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

25 ft Cross Wired DB9 Serial Null Modem Cable - F/F

$19.99

In stock:   Canada: 122  |  USA: 425

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

10 ft DB9 RS232 Serial Null Modem Cable F/M
SCNM9FM

10 ft DB9 RS232 Serial Null Modem Cable F/M

Transfer files via serial connection

$11.99

In stock:   Canada: 114  |  USA: 2302

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

DB9 to DB25 Serial Cable Adapter - F/F
AT925FF

DB9 to DB25 Serial Cable Adapter - F/F

Convert a DB9 male port to a DB25 female port

$10.99

In stock:   Canada: 40  |  USA: 981

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

Right Angle DB9 to DB9 Serial Cable Adapter Type 2 - M/F
GC99MFRA2

Right Angle DB9 to DB9 Serial Cable Adapter Type 2 - M/F

Add space for your DB9 serial port and connect a DB9 cable even in tight installation spaces

$13.99

In stock:   Canada: 134  |  USA: 1089

We will transfer stock to fulfill your order at no extra cost. If the quantity shown for our Canadian warehouse isn’t enough to fulfill your order, we will transfer the required stock from our US warehouse.

Share your opinions about this product

Thanks for sharing your opinions about the ICUSB232DB25. When writing your review, please focus on the performance and quality of this product. Your comments will help guide others. If possible, include examples of how you use the product, things you like or things you wish were different about it.

We're here to help

If you need support or you want to comment on parts of your purchase experience aside from the quality or performance of the product such as shipping or any technical/customer support issue, etc., we’d be happy to help you through Live Chat, our support form or by phone.

Reviews

Rating Snapshot

★   1
★   0
★   0
★   0
★   0

Average Customer Ratings

1-1 of 1 Reviews
Sort:  
Rating: 5 /5

Perfect for Network Device Configuration

Bought this way back in 2013 for use with my college computer program which involved a lot of network device configuration (primarily with Cisco switches, routers, and firewalls). Never had an issue with this adapter functioning as intended. It worked reliably and it's really durable considering I've had it knotted in a ball, and stored in a tight coil but it still works. It's almost 4 years later and I have no concerns about this thing lasting me a decade or above. Never did use the parallel portion. If there's any complaint I have, it's that it feels a little cheap since it's just plastic, and it looks very plain with just the grey. Making it like a black matte plastic like the many video adapters, and adding the company logo would be a nice change.

Quality of Product
Helpful? Yes · 0 No · 0 - Report Comment

* Product appearance and specifications are subject to change without notice.

x

Startech.com - USB to RS232 DB9/DB25 Serial Adapter Cable - M/M

My Review

Overall Rating*
Click to rate
It was easy to find this StarTech.com product
YES
NO
My rating for the quality of this product
Click to rate

You may receive emails regarding this submission. Any emails will include the ability to opt-out of future communications.

* denotes a required field