USB to DB9 Serial Plug-in Adapter

Sewell Part # SW-1314

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4.6 (32 reviews)

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"Website is sweet - got my order in 2 business days."


Prefer a USB to Serial adapter without an attached cable? This two-inch converter plugs right into the USB port of your laptop avoiding the hassles and tangles of excess cable.

Works with Windows and Mac. The needed drivers are included with the product, or you can download the drivers by clicking downloads


Mfg. Part Number



  • Titan


  • USB Type A Male
  • 9-pin Serial Male


  • Bus Powered (no external power required)

System Requirements

  • Works with Windows, Mac, and Linux
  • Pentium 233 MHz or faster
  • 64 MB RAM or more
  • Available USB Port

Other Technical Info

  • Installs as COM port
  • Full RS-232 modem data and control signals
  • Serial port speed up to 230 Kbps
  • Two LED indicators for Tx/Rx status monitoring & diagnostics
  • FTDI Chipset

Package Contents

  • USB to Serial adapter
  • Driver CD


32 Total Reviews -

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(22) 68.8 %
(7) 21.9 %
(2) 6.3 %
(1) 3.1 %
(0) 0.0 %

Not Rated

(0) 0.0 %

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Most helpful reviews

USB to DB9 Serial Plug in Adapter

Boricua - 5/5/2008 6:02:56 PM

24 found this review helpful

Pros: Excellent Product. Plugged it in, installed drivers, and used it right away. Using Windows Vista Premium with no problems.

Cons: Once plugged in, you cannot plug in another USB device next to it due to space. Adapter is somewhat thick and takes up space, but that is just a minor thing.


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Iam very pleased with the serial plug adapter. It was very easy to install.

Anonymous - 5/12/2008 5:28:26 PM

7 found this review helpful

Pros: Very easy to use.

Cons: none


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Anonymous - 4/14/2009 1:14:15 AM

5 found this review helpful

Pros: Did a great job for what it was designed for.

Cons: Too long. It extended too far out. It broke when it was hit by someone.

Other: Arrived as scheduled.

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Most recent reviews

purchasing Manager

- 9/24/2018 5:26:50 AM

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Great Adapter

L Brown - 9/5/2012 2:06:21 PM

I discovered I needed a second of these adaptors. During class Tueday evening I placed the order. On Thursday afternoon it arrived in the mail. The old software can recognize COM ports 1-4; Windows 7 assigned it to 8; I changed the port and it functions with 1990's software beautifully. Quality product delivered very promptly (a normal execution of an order by Sewell).

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Serial port for Win 7

Fredeliot - 5/1/2011 3:39:26 PM

Worked perfectly with Win 7 Pro 64 for an application where another adapter using the Prolific chip set did not work. The problem seems to be the drivers for the Prolific in Win 7 as it had worked with XP.

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grampybop - 9/7/2010 1:28:32 PM

super, does just what I needed. Installed quiclky and worked strait away.

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Good to go

mike - 3/30/2010 11:26:38 AM

I had tried 2 other brands of USB to DB9 serial plug in adapter, and they would not load on windows 7, this unit installed and loaded easly and is working well. The service from SEWELL was excelent and quick. Thank You, Mike

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See all 8 questions


Is this USB to DB9 converter Windows vista compatible? Do I have to install an additional driver?


Yes, they are Vista compatible and they do require the latest driver - download the latest Vista-Compatible USB to Serial driver now. Note that this driver is intended for this adapter only - if you bought your adapter somewhere else you should contact them for the latest driver.

8 out of 30 found this helpful.

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I just purchased a Wacom Intuos 2 Tablet having been told that it would be compatible with my Macintosh computer; however the tablet has a serial cable and my Mac doesn't have any available serial ports. Will this converter meet my hardware needs?


Yes, this adapter will transform any of your available USB ports into fully operational serial ports, capable of complete integration with your Wacom Intuos 2 Tablet, or any other DB9 serial device in your personal electronics arsenal.

7 out of 13 found this helpful.

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I have a usb barcode scanner which I need to connect to a serial com port, will this device work?


Yes, this cable will allow you to connect your barcode scanner to your computer by turning an available USB port into a serial com port.

5 out of 12 found this helpful.

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USB to DB9 Serial Plug-in Adapter


Driver Downloads

Windows Driver - Windows 10, 8, 7, Vista

Mac Driver - OS X 10.4 or later