Typically, you would use this cable to connect to another device that has a computer built-in with a DB-9 Female connector. All USB adapter cables have a one or more computer chip used to convert USB ports into RS-232 ports.
This is a 1.8M USB Serial RS-232 Null Modem Full Handshake Cable with a DB-9 Male connector, Metal Housing with thumbs screws. Typically, you would use this cable to connect to another device that has a computer built-in with a DB-9 Female connector.

o FTDI FT232RL and RS-232 level shifter chips
o Cable pin-out specification notation [Device Side Signal Name (Device Side Pin #) ]: TXD (3), RXD (2), RTS (7), CTS (8), GND (5), DSR (6) & (1), DTR (4)
o USB 2.0 Full Speed compatible
What is FTDI?
All USB adapter cables have a one or more computer chip used to convert
USB ports into RS-232 ports. My listing pictures show you the
chip(s) inside the USB connector housing. Of course your cable comes with the
chip enclosed in plastic housing. Most USB adapter cables sold today
use a chip made by Prolific or even worse fake versions of the Prolific chip.
There are serious driver OS compatibility issues with Prolific drivers that are
a nightmare for users. You get what you pay for. If you see a USB adapter
cable that comes with a CD that cable uses the Prolific chip and it contains
the Prolific drivers. My cables use only the FTDI chip which is more
expensive but there are no driver issues and no fake chips to worry about.
You don’t need a CD with my cable. Windows will install the FTDI drivers automatically. You
don’t want a cable with a CD!!
Supported Operating Systems
Drivers are available which
allow USB FTDI devices to work with the following operating systems:
Benefits with FTDI Cables
No
CD required, no drivers to install typically
No
Blue screen of death caused by Proflic drivers
No
Proflic Error 10 - drivers cannot be installed problems
No
fake Profilic chips
14-day return exchange policy if and only if you pay to ship both ways on the exchange if you made the mistake. If you bought the wrong physical connector you pay, regardless of what listing title states.
If I send you the wrong cable or the connector is correct and the cable does not work I will ship you the correct cable and a prepaid return envelope at no charge.
1-year warranty if and only if the product has not been modified. You pay return shipping and I will ship you a replacement at no charge.
Technical Support
I stand behind everything I sell and I promise that I will do my best to troubleshoot any problem you encounter. All I ask of you is that you give me a chance to correct any issues you have before you provide your feedback.
Contact me if you don’t see what you need, or you have questions.
| Country of Origin | China |
| Brand | BlueMax49ers |
| Type | Cable |
| Connector A | USB Type-A Male |
| Connector B | DB-9 Male |
| Cable Length | 6 ft |
| Features | US based, Software Download, Install Instructions, Tech Support |
| MPN | NM-9M 6 ft |
| Unit Quantity | 1 |
| Unit Type | Unit |
| Color | Black |
| Manufacturer Warranty | 3 Years |
| Serial Converter Chipset | FT232RL |
| USB to Serial Adapter | FTDI |
| UPC | 687408659360 |
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