StarTech.com

1 Port FTDI USB to Serial RS232 Adapter Cable with COM Retention

Add an RS232 serial port with COM retention to your laptop or desktop computer through USB

Product ID: ICUSB2321F

  • Integrated FTDI USB UART Chip
  • Baud Rate up to 115.2Kbps
  • COM Port assignments maintained across reboot
View More
  • Powered by the USB port - no external power adapter required
  • Single cable design for portability
  • Designed to make serial port expansion quick and easy
  • Compatible with Windows®, Mac OS and Linux
  • 6-foot cable length for connecting to devices without having to be too close
  • USB to Straight-Through RS232 Serial Adapter
$30.99 USD
2414+ In stock
In stock
US: 2035 | CA: 379
2414+
In stock
Where To Buy
Same Day Shipping on in-stock items from USA if ordered by 5pm ET* Details

Volume Order?
Request a quote

Reseller Pricing:
Create an Account

Technical Specifications

Warranty Information
Warranty 2 Years
Hardware
Bus Type USB 2.0
Chipset ID FTDI - FT232RL
Interface Serial
Port Style Cable Adapters
Ports 1
Performance
Data Bits 7, 8
FIFO 256 Bytes
Max Baud Rate 115.2 Kbps
MTBF 836981.2 hours
Parity None, Odd, Even, Mark, Space
Serial Protocol RS-232
Stop Bits 1, 2
Connector(s)
Connector Type(s) 1 - DB-9 (9 pin, D-Sub) Male
1 - USB Type-A (4 pin) USB 2.0 Male
Software
OS Compatibility Windows® CE (4.2, 5.0, 6.0), XP Embedded, 98SE, 2000, XP, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016, 2019
Mac OS® 10.6 to 10.14
Linux 2.4.x to 4.11.x LTS Versions only
Special Notes / Requirements
System and Cable Requirements One available USB 1.1 (or better) port
Power
Power Source USB-Powered
Environmental
Humidity 5~95% RH
Operating Temperature 0°C to 55°C (32°F to 131°F)
Storage Temperature -20°C to 85°C (-4°F to 185°F)
Physical Characteristics
Cable Length 6 ft [1.8 m]
Color Black
Enclosure Type Plastic
Product Height 0.9 in [2.2 cm]
Product Length 1.8 in [45 mm]
Product Width 1.6 in [41.5 mm]
Weight of Product 3.2 oz [90 g]
Packaging Information
Package Height 1.3 in [32 mm]
Package Length 6.9 in [17.5 cm]
Package Width 5.7 in [14.5 cm]
Shipping (Package) Weight 6.2 oz [176 g]
What's in the Box
Included in Package 1 - USB to RS-232 Serial Adapter
1 - Driver CD
1 - Instruction Manual

Compatibility

View full OS compatibility
Windows® CE (4.2, 5.0, 6.0), XP Embedded, 98SE, 2000, XP, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016, 2019
Mac OS® 10.6 to 10.14
Linux 2.4.x to 4.11.x LTS Versions only

Certifications

Related Products

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

$28.99
2081+ In stock In stock
US: 1757 | CA: 324
In stock Learn More
1 Port USB to RS232 DB9 Serial Adapter Cable - M/M
ICUSB232V2
1 Port USB to RS232 DB9 Serial Adapter Cable - M/M

Add an RS232 serial port to your laptop or desktop computer through USB

$21.99
6510+ In stock In stock
US: 4815 | CA: 1695
In stock Learn More
USB to RS232 DB9/DB25 Serial Adapter Cable - M/M
ICUSB232DB25
USB to RS232 DB9/DB25 Serial Adapter Cable - M/M

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

$20.99
1328+ In stock In stock
US: 1053 | CA: 275
In stock Learn More
1 Port FTDI USB to Serial RS232 Adapter Cable with Optical Isolation
ICUSB2321FIS
1 Port FTDI USB to Serial RS232 Adapter Cable with Optical Isolation

Add an RS232 serial port with circuit isolation to your laptop or desktop computer, through USB

$117.99
11+ In stock In stock
US: 4 | CA: 7
In stock Learn More
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

$43.99
382+ In stock In stock
US: 357 | CA: 25
In stock Learn More
3ft USB to RS232 DB9 Serial Adapter Cable - M/M
ICUSB232SM3
3ft USB to RS232 DB9 Serial Adapter Cable - M/M

Add an RS232 serial port to your laptop or desktop computer through USB

$29.99
1142+ In stock In stock
US: 860 | CA: 282
In stock Learn More
1 Port Industrial USB to RS232 Serial Adapter with 5KV Isolation and 15KV ESD Protection
ICUSB232IS
1 Port Industrial USB to RS232 Serial Adapter with 5KV Isolation and 15KV ESD Protection

Add a galvanically isolated RS232 serial port with ESD protection through a USB port - DIN Rail Mountable

$92.99
37+ In stock In stock
US: 21 | CA: 16
In stock Learn More
Micro USB to RS232 DB9 Serial Adapter Cable for Android with USB Charging - M/M
ICUSBANDR232
Micro USB to RS232 DB9 Serial Adapter Cable for Android with USB Charging - M/M

Add an RS232 serial port to your Android smartphone or tablet device through Micro USB with USB charging capabilities

$41.99
247+ In stock In stock
US: 237 | CA: 10
In stock Learn More
1 Port USB to RS232 DB9 Serial Adapter with Detachable 6ft USB A to B Cable
ICUSB232D
1 Port USB to RS232 DB9 Serial Adapter with Detachable 6ft USB A to B Cable

Add an RS232 serial port to your laptop or desktop computer through a detachable USB cable

$17.99
66+ In stock In stock
US: 33 | CA: 33
In stock Learn More
3 ft 1s1p USB to Serial Parallel Port Adapter Cable
ICUSB2321284
3 ft 1s1p USB to Serial Parallel Port Adapter Cable

Add one RS232 Serial, and one IEEE 1284 Parallel port to your computer through a single USB connection

$37.99
7+ In stock In stock
US: 7 | CA: 0
In stock
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

$62.99
71+ In stock In stock
US: 53 | CA: 18
In stock Learn More
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

$47.99
8+ In stock In stock
US: 8 | CA: 0
In stock
2 Port FTDI USB to Serial RS232 Adapter Cable with COM Retention
ICUSB2322F
2 Port FTDI USB to Serial RS232 Adapter Cable with COM Retention

Add two RS232 serial ports with COM retention to your laptop or desktop computer through USB

$66.99
262+ In stock In stock
US: 242 | CA: 20
In stock Learn More
2 Port Industrial Wall Mountable USB to Serial Adapter Hub with DIN Rail Clips
ICUSB2322I
2 Port Industrial Wall Mountable USB to Serial Adapter Hub with DIN Rail Clips

Add 2 DIN Rail-mountable RS232 Serial ports to any system through USB

$71.99
243+ In stock In stock
US: 211 | CA: 32
In stock Learn More
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

$97.99
385+ In stock In stock
US: 344 | CA: 41
In stock Learn More
4 Port USB to DB9 RS232 Serial Adapter Hub – Industrial DIN Rail and Wall Mountable
ICUSB2324I
4 Port USB to DB9 RS232 Serial Adapter Hub – Industrial DIN Rail and Wall Mountable

Add 4 DIN Rail-mountable RS232 Serial ports to any system through USB

$115.99
2989+ In stock In stock
US: 2924 | CA: 65
In stock Learn More
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

$109.99
424+ In stock In stock
US: 407 | CA: 17
In stock Learn More
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

$215.99
130+ In stock In stock
US: 114 | CA: 16
In stock Learn More
8 Port USB to DB9 RS232 Serial Adapter Hub – Industrial DIN Rail and Wall Mountable
ICUSB2328I
8 Port USB to DB9 RS232 Serial Adapter Hub – Industrial DIN Rail and Wall Mountable

Add 8 DIN Rail-mountable RS232 Serial ports to any system through USB

$191.99
128+ In stock In stock
US: 128 | CA: 0
In stock
8-Port USB-to-Serial Adapter Hub
ICUSB23208FD
8-Port USB-to-Serial Adapter Hub

Convert a single USB port into eight serial ports, and connect multiple hubs together for a scalable solution

$268.99
68+ In stock In stock
US: 62 | CA: 6
In stock Learn More
16-Port USB-to-Serial Adapter Hub
ICUSB23216FD
16-Port USB-to-Serial Adapter Hub

Convert a USB port into 16 RS232 serial ports in an industrial rack-mountable chassis - and daisy chain multiple hubs for a scalable solution

$446.99
82+ In stock In stock
US: 74 | CA: 8
In stock Learn More
2 Port Industrial USB to Serial RJ45 Adapter - Wallmount and DIN Rail
ICUSB2322RJ
2 Port Industrial USB to Serial RJ45 Adapter - Wallmount and DIN Rail

Add two RS232 serial RJ45 connections to a PC or Server through USB, with this DIN Rail and wall-mountable adapter

$45.99
FTDI USB to Serial Null Modem DCE Adapter Cable
ICUSB232FTN
1 Port USB to Null Modem RS232 DB9 Serial DCE Adapter Cable with FTDI

Add a Null Modem RS232 serial port to your laptop or desktop computer through USB

$33.99
2345+ In stock In stock
US: 2241 | CA: 104
In stock Learn More
2 Port USB to RS232 RS422 RS485 Serial Adapter with COM Retention
ICUSB2324852
2 Port USB to RS232 RS422 RS485 Serial Adapter with COM Retention

Add RS232, RS422 and RS485 support to your laptop or desktop computer via USB

$98.99
137+ In stock In stock
US: 124 | CA: 13
In stock Learn More

Accessories

1 Port FTDI USB to Serial RS232 Adapter Cable with COM Retention

Customer Reviews

4 (4 reviews)
4 out of 5 stars
Quality of Product
2.5
Tell us what you think of this product.


Need a little help getting started? Check out our review guidelines.

1 - 4 of 4 Reviews

(1 star) Simply doesn't work

By: bobbob
Unlike normal serial adapaters which you plug in and it works, this doesn't.
Comment Helpful? Yes - 0 No - 0 Report
Response from StarTech.com:
Matt, Customer Support
We're sorry to hear our ICUSB2321F isn't working for you. This adapter may require drivers depending on your operating system. These drivers can be found here: https://www.startech.com/ICUSB2321F#dnlds. If you require assistance, please feel free to contact us at www.startech.com/support where our Technical Advisors are available 24-hours a day, 5-days a week.

(5 stars) Com Port Retention makes life easier

By: Marilyn
We have several of these deployed and the Com Port Retention makes life easier for our clients - and we've never had a failure. So we are quite happy with this product.
Comment Helpful? Yes - 0 No - 0 Report

(5 stars) Worked Flawlessly

By: Nikon Shooter
I was unable to upgrade firmware and/or control my iOptron mount with the KeySpan Tripp-Lite USB to Serial cable. It was suggested by iOptron that I get the FIDI cable instead. A member of our Astronomy club recommended Startech.....and the rest is history. I would not hesitate using this company for additional needs.
Quality of Product (5/5)
Comment Helpful? Yes - 3 No - 1 Report

(5 stars)

By: eddy
Quality of Product (5/5)
Comment Helpful? Yes - 1 No - 5 Report