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6ft (1.8m) USB to DB25 Serial RS232 Adapter Cable

#22429 C2G
USB to DB25 Serial RS232 Adapter Cable is rated 4.3 out of 5 by 24.
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$34.99 $43.99 MSRP USD

This adapter cable enables high speed serial data transfer up to 115.2 K between the USB and the traditional RS-232 serial port. Since this adapter uses no IRQs, it is ideal for when you need many serial devices attached to your PC. Just connect your computer's or hub's USB port with a digital camera, modem, ISDN-TA modem, barcode reader, Palm III and V, tablet, label writer, fingerprint verification, security system, POS equipment or any of your favorite serial devices. This adapter cable is a perfect accessory for Microsoft® Surface® products and other leading laptops and tablets.

Please Note: This product creates a virtual serial port. It is not intended to connect a parallel printer/device to a USB port.

Discover more connectivity solutions for the Microsoft Surface
Connector 1:
(1) USB-A Male
Connector 2:
(1) DB25 Male
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  • Perfect for connecting a serial device to a laptop or PC's USB port
  • Use multiple adapters simultaneously to connect multiple serial devices
  • Compatible with USB 1.1, USB 2.0 and USB 3.0 ports
  • Compatible with the Microsoft® Surface® Book 2, Surface Pro 6, Surface Laptop 2, and other leading laptops


General Info
Product Line C2G
Color Blue
UPC Number 757120224297
Country Of Origin China
Features RS232
Application Sector Residential, Commercial
Warranty Type 5-Year
Type Adapter, Cable, Active Device
Product Length US 6.0 FT
Cable Length 6 ft
Technical Information
Jacket Material PVC (Polyvinyl Chloride)
Wire Gauge 24 AWG
Cable Type USB, Serial, Adapter
Amperage 100 mA
Data Transfer Rate 480 Mbps


Rated 1 out of 5 by from Wrong Advice I was told that the cable would work with my Mac G4 laptop. Also was told that the hexnuts were removable by just unscrewing them. Well, they are not unscrewable however, I was able to remove them without ruining the cable. Trying to use the cable to go from Mac USB to iomega Zip SCSi connection to be able to use my commercial HP scanner and the iomega ZIP drive. It doesn't work with Mac OS10 or even Mac OS9 Classic. Even though it connects physically, the compatibility is not there. It is unreturnable since I to alter it to get the hex nuts off. Thanks anyway for your service.
Date published: 2009-10-12
Rated 4 out of 5 by from Works as Advertised Used this cable as a communication bridge from my SMDR port on our Nortel Phone equipment to our Network Server for phone auditing/report generating capabilities. The cable works as advertised. I had an issue with the DB25-side securing screws - they prevented me from securing the DB25 side down into the SMDR port so I used a hacksaw and sawed them off to make the interface bezel flush and allow it to seat properly. This is in no-way a negative aspect of the product as I am using this cable to fulfill a purpose slightly outside of its original scope.
Date published: 2009-05-04
Rated 4 out of 5 by from 6ft USB Serial DB25 Adapter Cable I upgraded my computer to one with no serial ports. I was getting FIFO errors although FIFO was turned off. Downloaded the driver in support dated 3-5-13 the problem was fixed.
Date published: 2013-03-25
Rated 4 out of 5 by from Adapter Cable worked great on W8! Needed this adapter cable to connect my Laptop running W8 to a Kantronics KPC-3 Plus TNC. Since the adapter cable D25 Connector comes with lugs, had to remove the lugs on the back of the TNC before I could install.
Date published: 2012-11-08
Rated 5 out of 5 by from Shipped on time, worked fine. No cons. Wish list would include having software configure to given com ports, instead of through Windows (Admin permission problem on windows vs. software setups.) Still product did exactly as it was advertised, and my small COM port problem is fixed!
Date published: 2012-03-14
Rated 5 out of 5 by from Perfect for the job! A perfect interface between my IC-786 Amateur Radio Transceiver, the IC-CV17 level converter, and my PC. Installs easily and works the first time. I highly recommend for this purpose
Date published: 2011-12-13
Rated 4 out of 5 by from Product worked as expected Product used to connect a mill machine to a PC.
Date published: 2016-11-03
Rated 1 out of 5 by from All talk, no action I purchased this to allow connection of a RS232 device to a USB port on my computer. The software did not work and the connection did not link. I am not sure if there is a hardware issue as well as this type of device usually has an onboard chip for configuration. Regardless, the cable combo did not work.
Date published: 2009-05-12
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Questions & Answers

Is this intended to connect to DCE equipment or DTE? Or to put it another way, if the USB end is plugged into a PC, is pin 2 the output from the PC or is pin 2 the input to the PC?

Asked by: Robert
This cable is intended to be used as if it was the serial connection on a PC. The cable is pinned to a chipset so it does not have a standard pin out, but reflects the RS232 serial communication.
Answered by: Thomas
Date published: 2019-09-19

I have a Kantronics 3 plus and a Dell laptop running Windows11. Will this cable successfully connect the two?

Asked by: George
it should. However with the Windows 11 you may have to update the drivers for the Chipset from the Prolific website. It uses the PL-2303GC chipset
Answered by: Thomas
Date published: 2023-12-01

My printer is ESPON TM-T88IV. this printer has no USB interface serial cable. So I absolutely need your this type of cable. But Are you sure this Cable is compatible to USB? Brian

Asked by: Brian
This cable will convert from USB to serial interfaces and can be used with a wide variety of devices for this purpose. It is important to check with the manufacturer of your device as not all devices are compatible with these types of cables.
Answered by: Thomas
Date published: 2021-12-28

Is this a straight through or null modem cable?

Asked by: Keith
This device is meant to be used as a adapter, this is meant to be connected to a cable and then the device. The connection is straight through.
Answered by: Thomas
Date published: 2020-05-11

Will this cable work with an HP 7475A Pen Plotter and how is the USB port set up as a printer/plotter port?

Asked by: TimM
We can not answer if specific printers will work. The Chip-set in the device activates the USB PRINTER SUPPORT Driver on the PC.
Answered by: Thomas
Date published: 2019-01-07

Can this cable be used to connect a very old computer to a brand new multi-function laser printer?

Asked by: Bill G.
This part is meant to connect a Serial device with a DB25 connector to a PC via USB.
Answered by: Paul
Date published: 2018-09-07

Is this cable compatible with Windows 10?

Asked by: Anonymous
Yes this is compatible with Windows 10.
Answered by: Tom
Date published: 2017-10-05

How do i get the driver for this cable?

Asked by: Anonymous
The drivers are in the product support section of the product page. http://www.cablestogo.com/product/22429/6ft-usb-to-db25-serial-rs232-adapter-cable#support
Answered by: Steve
Date published: 2017-10-05
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