$19.95
$29.95

USB to RS-232 DB9 Serial Adapter Cable

Male to Male - Power on DB9 Pin 9
SIO-U232-59

Quick Overview

Add an RS-232 serial port to your laptop or desktop computer through USB. USB to Serial Adapter converts a USB port into an RS-232 DB9 serial port to connect to, monitor, and control a serial device.

Supporting data transfer rates up to 921.6 Kbps, the USB to serial cable is a convenient and cost-saving solution for providing serial connectivity to devices such as barcode scanners, NFC-RFID readers, scales, sensors, GPS receivers, serial modems, industrial equipment, printers, and a wide variety of other RS232 peripherals.  

The USB to RS232 converter is easy to install and offers broad operating system compatibility, including Windows, Linux, and Mac OS, for easy integration into mixed environments.

Standards
Conforming to USBV1.0, 1.1 and 2.0 and EIA RS-232

USB Signals
VCC, DATA+, DATA-, GND and FG

RS-232 Signals
DCD RXD TXD DTR GND DSR RTS CTS RI

Working Mode
Asynchronous point-to-point

Baud Rate
300-460.8Kbps
 
Dimensions
60 in × 1.3 in × 0.62 in

Working Environment
-40℃ to 85℃
Relative Humidity 5% to 95%

Support
Win10/98/2000/2003/2008/XP/Vista/7/CE/Mac/Linux
Both BUS and external power supply are supported.

In 2009 I upgraded to a computer system using Windows 7 Pro and of course no RS-232 serial port. I have been using an RSI-CED Millenium chronograph for years and have acquired an extensive amount of data over the years with this system. The manufacturer o

In 2009 I upgraded to a computer system using Windows 7 Pro and of course no RS-232 serial port. I have been using an RSI-CED Millenium chronograph for years and have acquired an extensive amount of data over the years with this system. The manufacturer of the chronograph recommended Serialio.com as a source for a USB to RS-232 serial adapter. I ordered one in January of 2010 and promptly received it. When I tried it, and the enclosed software, I could not get it to work on my system running Windows 7. Like a stubborn fool I would try different things and downloads with no success. I didn't bother to contact customer support until November 2010 - I figured for a $19.95 cable I would just be wasting more time. What a pleasant surprise!! I received a reply and a possible fix in a matter of HOURS!!! Due to my inexperience with Windows 7 I could not get the download, suggested by Serialio, to extract. I sent an email back explaining my problem and in less than an hour I had a reply and a solution to my problem!!! Any company that has customer support like this for an item as small as a $20. cable, and to still support it after 10 months of my procrastination, has to be one of the BEST companies out there!! Thanks again to Jordan for his quick, professional responses and to the SerialiO company for their excellent products. I would not hesitate to try any of their products in the future. 

Set Up Guides and Articles

Quick Start How-To Setup USB Serial adaptor with Parallels VM and OS X
Quick Start How-to for using the USB to Serial Adaptor / Converter on OS X.
SerialMagic How To: Setup USB to RS-232 Serial Adaptor on Parallels



Download Drivers

For units with power on PIN 9 FTDI drivers, click here.
For Prolific drivers, click here.


 

USB Hub Notes

The adapter works with virtually all powered USB hubs. With OS X use is painless, just plug-and-use. Windows versions prior to XP are notorious for quirky issues with devices on USB hubs, be sure to choose a good USB hub if you plan to use Windows prior to XP - this goes for all USB devices over hubs on older Windows, not just this USB to RS-232 adapter.


 

Application Notes

Review application notes about using the adapter.

Note: Device may not be exactly as pictured.