1.5ft USB to DB9 Serial RS232 Adapter Cable


Product Features

Convert a DB9 RS232 serial device to USB; great for PDAs, digital cameras, and many other peripherals!
• Perfect for connecting DB9 devices to a PC without serial ports
• Available in single, two-port and four-port DB9 to USB configurations
• Choose from a 1.5ft or 5ft adapter
• Compatible with the Microsoft® Surface® Book 2, Surface Pro 6, Surface Laptop 2, and other leading laptops and tablets
(1) USB-A Male
(1) DB9 Male

Product Description

Connecting USB with the traditional RS-232 serial port, this adapter connects cellphones, PDAs, digital cameras, modems, or ISDN terminal adapters through your USB port. Has a data transfer rate of over 230 kbps. Since the adapter uses no IRQs, there are no IRQ conflicts, and it is ideal for when you need many serial devices attached to your PC. Frees your RS-232 port for other uses. This adapter cable is a perfect accessory for Microsoft® Surface® products and other leading laptops and tablets.

Learn more about how this C2G product and other C2G products can help you adapt your Chromebook to meet your needs by reading our blog post, Getting the most from your Chromebook, visiting our Chromebook Adapters New Technology page, exploring our Chromebook Solutions page, or checking out our Chromebook Adapters product category.

Note: Using this adapter with a Chromebook requires a serial terminal application. This type of application may be downloaded from the Chrome Web Store.

Discover more connectivity solutions for the Microsoft Surface
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Product Certifications

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RoHS Compliant

Product Specifications

Color : Blue
Length : 1.50 Foot
UPC : 757120268864
Warranty : 1 Year
Vendor : C2G
Weight : 0.164 LB
• Supports automatic handshake mode
• Data transfer rate: Over 230 kbps
• Supports remote wakeup and power management
• 96 byte buffer each for upstream and downstream data flow
• Windows 8 compliant

System Requirements

• IBM®-compatible PC running Microsoft® Windows® 98SE, ME, 2000, XP, Vista, Windows Server 2012, Windows 7, Windows 8, Windows 8.1 or Windows 10
• Pentium® processor of 200 MHz or above
• CD-Rom drive
• An available USB port either from the system or a USB hub

Product Support


• Download the manual
• Download the Windows XP/Vista/7/8/10 Driver | Windows 98/ME Driver | Mac OSX Driver
Customer Reviews

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Rated 5 out of 5 by from I would buy this again. I needed a serial adapter and this worked great.
Date published: 2015-01-04
Rated 2 out of 5 by from Hardware Good - Software Bad I use this product several times a week in my job, and so do some of my coworkers. The product is nice for us because our laptops do not have Serial ports, so we use this product to console into networking equipment. The biggest issue I have with this product is the drivers for it. I use Windows 7 64-bit and so do my coworkers. This device will almost always (4 out of 5 times) bluescreen my laptop, especially when I'm in debug mode or if I'm receiving a lot of info from the console. I have tried the last three versions of the drivers and none of them have helped the bluescreen issues. CablesToGo: Please, PLEASE fix the issues this device has with Windows 7 64-bit. If a new driver is not released soon, my coworkers and I will have to find a more compatible product.
Date published: 2010-08-26
Rated 4 out of 5 by from works like a dream Used to convert roller mouse from old computer to new laptop. Worked just as avertized. All i had to do was plugin and let computer find drivers, was working within 3 minutes. Much more enjoyable than finger pad that came with new computer. Very happy with this buy.
Date published: 2010-03-25
Rated 2 out of 5 by from 64 bit drivers don't work This works great as long as you are on XP 32-bit. If you are on a 64-bit machine it will BSOD your box when you run at a speed of 19200. No matter what I plug it into, speed 19200 works for about 1 min then I get a BSOD with Multiple_IRP_Request errors.
Date published: 2009-08-20
Rated 5 out of 5 by from Works as intended Install the drivers first then plug it in... that is it, your done!
Date published: 2015-05-27
Rated 1 out of 5 by from Does not work with 64-bit Windows 7 This cable/driver installs properly but my 64-bit system cannot connect to any devices through it. Apparently this is a problem with cables from other mfg.s as well.
Date published: 2010-12-30
Rated 2 out of 5 by from Doesn't support higher voltage RS232 product fails to communicate with older devices that have higher RS232 signal levels. This device has a TX signal level of about -6.4 volts. Older devices range from -10 to -12 volts. The signal level in the older devices appears to hang the hardware and then the Windows Device driver as well. Works well with newer device that have compatible signal voltage levels.
Date published: 2011-01-06
Rated 3 out of 5 by from Did Not Work I purchased this UART converter cable to connect to two new HP 1950 12XGT switches via their console ports. It will not connect from my laptop to either of them, connecting this adapter cable to the serial to RJ45 console cable that came with the devices. I cannot say that the adapter cable is bad, because it might just be an HP serial cable pinning issue, so I will not return it. Hopefully that is the case, because if I knew the cable was bad for sure, I would return it. Since serial connections are SO obsolete, I have nothing to test this cable with, so I am stuck I guess.
Date published: 2018-05-24
Rated 2 out of 5 by from Only worked part of the time for me This cable worked but then the device I was using it with hung. An alternative cable worked 100% of the time. The device was a serial scale. Further this cable has no ability to screw into mounted posts. The screws are embedded in the molded plastic which was a problem for me. I had to take out the posts on the connecting device.
Date published: 2010-03-30
Rated 5 out of 5 by from Worked perfectly with Win7 I was able to interface a UltraSmart Glucometer which had a DB9 interface to my new Win7 laptop's USB port. The vendor of the UltraSmart did not recommend using Win7, yet the UltraSmart worked with Win7 using this interface cable. Software driver installed on Win7 without any problems.
Date published: 2010-09-16
Rated 5 out of 5 by from Works great on a MacBook Pro I use the USB Serial DB9 Adapter Cable on a MacBook Pro to connect to Cisco hardware and a few HP MSAs. Works great and is VERY reliable. Cables To Go support via chat provided me a link to the driver. The driver had an install program. Highly recommended USB Serial DB9 Adapter.
Date published: 2010-10-06
Rated 5 out of 5 by from Works great with sewing S/W and Bernina This adapter works well with Explorations embroidery s/w and my Bernina sewing machine. The product label does not indicate that software is included in the package. I discovered the CD after downloading the driver from the internet.
Date published: 2009-11-24
Rated 5 out of 5 by from Good security product This product was recommended to me by Schlage security systems to convert their serial cable to our USB computer port. Not any cable would work. I found that this cable worked after buying others. If you need commercial quality like we do for our security system, this adapter is great. You can't have one problem when dealing with security, and this cable absolutely works. Also, great technical support if you have compatibity problems. My software had a wrong setting which they and Schlage helped me figure out the problem. Great cable !!!!!!!!!!
Date published: 2009-05-11
Rated 2 out of 5 by from no drivers To use it I had to search the internet for drivers. Still questionable each time I use it. A competitors works better and included the correct driver.
Date published: 2010-03-16
Rated 2 out of 5 by from Unreliable with Win764 Does not work reliably with Win7-64bit on laptop but seems to work ok on our Win7-64 bit desktop. Don't know what the difference could possily be. Runs about a minute and then gets hung up. Cables TO GO has indicated several times they;re trying to get this fixed. Running 2400/8/1/N so not pushing the speed barrier at all! Driver on CD is late 2010 and not up to date. Use the driver on the website. We've been trying for months to get something that will work reliably on WIN764.
Date published: 2012-02-04
Rated 1 out of 5 by from does not program radio I use this adapter to assist in programing my mobile radio. This is the connection: computers usb port to usb-serial adapter to radio programing cable to radio. Radio goes into programing mode, but does not program. I was told it would work and it obviously does not. Will not recomend to anyone.
Date published: 2010-12-16
Rated 3 out of 5 by from Not sure on Server 2008R2 compatability Error in Server 2008R2 After a manual update/repair (Device Manager Shows Yellow in Device Manager) This device is not configured correctly. (Code 1) The name is already in use as either a service name or a service display name. To find a driver for this device, click Update Driver.
Date published: 2010-09-08
Rated 5 out of 5 by from USB to Serial Adaptor I'm an electronics system technician and I use this adpator to service more than 350 pieces of equipment. I use this adpater with Vista Business edition and a 3.0 USB port. It works great. I also like the that the length of the cable is longer than my old 2.0 adapter. No cons.
Date published: 2014-02-22
Rated 5 out of 5 by from Cd driver is included with package. After tossing the package in the trash, i read a review from a customer who stated that the cddriver (although not stated on the package) comes with the adpter. Needless to say i had to go fetch it out. But the adapter works well with my stentura stenograph machine
Date published: 2010-01-24
Rated 5 out of 5 by from It worked great This adapter was used to connect an old court reporter's steno machine to a modern laptop. I had to get from the db9 connector on the steno machine to the laptop and the only port available was a USB port. This did the trick and worked fine.
Date published: 2011-09-23
Rated 5 out of 5 by from Great product. I transfer data from 9 pin devices to computer. Cable works with Windows 7 Pro 64 bit as advertised. Set up was easy. I plugged it in. Device was recognized by computer and was ready to go. This cable does what I expected.
Date published: 2014-02-12
Rated 4 out of 5 by from Works like a charm Great for connecting to legacy devices such as old phone systems, fire alarm panels, security systems, etc. Since new computers no longer have Serial Ports, this is the best way to go by far.
Date published: 2009-05-04
Rated 5 out of 5 by from Great Product I use this cable to connect a laptops with no serial ports to network equipment. I have no had no problems with it being recognized by any equipment.
Date published: 2011-09-28
Rated 5 out of 5 by from A real money saver I collect DVD's and use a laser scanner in conjunction with a program to keep track of my collection. I recently bought a new computer and found it had no serial port. I needed to connect my laser scanner so I purchased this adapter cable to make my serial port scanner work as a USB unit. It saved me having to buy a $99.00 new scanner. It works great and I'm back to filing my DVD's.
Date published: 2012-04-17
Rated 5 out of 5 by from Great Part I needed an adapter for my gas techs to connect to the gas pumps with their laptops. This adapter does the trick.
Date published: 2010-05-12
Rated 5 out of 5 by from works great Used this to allow us to use a db9 based inerface over usb.
Date published: 2010-06-04
Rated 5 out of 5 by from Bets cable to get the job done Works well with Win 7 64bit systems.
Date published: 2011-02-18
Rated 5 out of 5 by from Seamless Installion Installed flawlessly with Windows 7
Date published: 2012-05-02
Rated 5 out of 5 by from GREAT JOB Use in scan tool at work
Date published: 2014-07-22
Rated 5 out of 5 by from I would buy this product again Does the job
Date published: 2014-02-03
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Questions & Answers

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Asked by: BILLYBOB
Using this on both Windows 7 and 10, I needed to load a driver to get this to work. Once loaded it works with various software the needs access to a Serial Comm Port. You will want to verify the Serial Comm port number within Windows Device Manager
Answered by: Jon@CCC
Date published: 2020-03-26

Does this device work with Wondows 10?

Asked by: chrisc
I did not personally use this yet, but our club updated their MET controllers using the cable without any issues.
Answered by: Jerseyjet
Date published: 2018-01-06

Will this adapter work with 3.0 USB?

Asked by: Anonymous
Yes, this adapter will work with a USB 3.0 port.
Answered by: Steve
Date published: 2017-10-05

Is it possible to get the pinout of this device? I have a pogo plug that I would like to take from a 4 pin serial adapter to a db9 connecypr that I would then like to take to the db9 part of this cable. The 4 pin connector on the sytem board has a tx, ...

Is it possible to get the pinout of this device? I have a pogo plug that I would like to take from a 4 pin serial adapter to a db9 connecypr that I would then like to take to the db9 part of this cable. The 4 pin connector on the sytem board has a tx, rx, 3.3v, and gnd.
Asked by: Eric
The DB9 pinout of the adapter is as follows: Pin 1 - DCD (Data carrier detect), 2 - RX (Receive), 3 - TX (Transmit), 4 - DTR (Data terminal ready), 5 - Ground, 6 - DSR (Data Set Ready), 7 - RTS (Request to send), 8 - CTS (Clear to send), 9 - RI (Ring indicator).
Answered by: Steve
Date published: 2017-10-05

Is it possible to get the USB to DB25 Serial RS232 Adapter Cable pinouts?

Asked by: Mark
This cable uses a standard RS232 Pinout.
Answered by: Tom
Date published: 2017-10-05

What is the interface Prolific, SGPI, or MOS chip set for this product? I will be using for continuos communication and know that Prolific driver is a problem.

Asked by: Brent
The 26886 uses the Prolific chipset.
Answered by: Michael
Date published: 2017-10-05

I measured this cable generating signal levels at -7V and +7V. Although the RS232 standard specifies signal levels can be as low as -3V and +3V, the levels generated by this adapter may not work in all applications (e.g. industrial). My PC generates si...

I measured this cable generating signal levels at -7V and +7V. Although the RS232 standard specifies signal levels can be as low as -3V and +3V, the levels generated by this adapter may not work in all applications (e.g. industrial). My PC generates signals at -11V and +11V. Do you offer a USB to DB9 serial adapter that generates signals closer to -15V and +15V than -7V and +7V? Thanks!
Asked by: Product User
unfortunately we do not have a cable that will meet your criteria
Answered by: Tom
Date published: 2017-10-05

will this adaptor work with a diy rs232 to gm aldl interface?

Asked by: pat
This will not work with DIY RS232 GM ALDL interface.
Answered by: Tom
Date published: 2017-10-05
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