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USB to Serial RS-232 DB9 Adapter FTDI Chipset w/ 15kV ESD Protection, Windows 11 Support
RS-232 | 512 Bytes Receive | 512 Bytes Transmit | FTDI
- Expand Your Serial Capabilities: Connect your legacy 9-pin serial device through a USB-A port to add legacy functionality to newer technologies with no serial port connections.
- Safe Connections: Designed with a unique system load reduction feature, the Mini USB to Serial Adapter also offers 15kV ESD protection for connected devices.
- Plug-&-Play: The adapter’s power is drawn from a USB connection for ease of access and is compatible with Windows (up to Win 11), Mac OS, and Linux.
- COM Retention: COM Ports are fully configurable, and after reboots, port assignments are preserved.
- Upstream: 1 USB port, Type A Male Connector
- Downstream: 1 Male DB9, w/ nuts
- LEDs: Power, TX / RX
$27.95
In stock
Volume Pricing
| Units | Discount | Price |
|---|---|---|
| 1 - 4 | — | $27.95 |
| 5 - 11 | 3 % | $27.11 |
| 12 - 24 | 5 % | $26.55 |
| 25 - 49 | 7 % | $25.99 |
| 50+ | 10 % | $25.16 |
Product Documentation
Software & Drivers
Quick Links:
Description
Introduction:
Our USB to Serial Adapter fully supports Windows 11, Windows 10, Windows 8, Windows 7. Utilizing the Newest FTDI Chip Technology allowing to be upwards compatible with Newer Operating Systems. Replacing your old USB to Serial Adapter with our new USB to serial adapter should be completely seamless. You can plug our adapter in and click update drivers from Windows and it will automatically download the drivers directly from Microsoft. The Drivers are fully certified.
Looking for a USB to Serial adapter? This is a great price and amazing support. This adapter has been fully tested with Windows 11 and works flawlessly. Do not hesitate to purchase it and use it in your new setup. We back this support claim up with a 30 day guarantee!
Features:
- 12 inch USB Cable length
- Adds one RS-232 serial port by connecting to a USB port
- Compact size cable type converter with cable length of 25 cm
- Installed as standard Windows COM port
- Full RS-232 modem control signals and hardware/software flow control
- RS-232 data signals: TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI, GND
- High speed serial port with the baud rate up to 921.6K bps
- Transmit Buffer: 512 bytes
- Receive Buffer: 512 bytes
- Non-standard baudrates supported
- LED status indicators for TxD and RxD for easy port monitoring and diagnostic
- Serial port protected with ESD protection of 15KV
- Powered by USB port, no external power adapter required
- Easy plug and play installation and RS-232 device connection
- COM port number assigned can be changed to any COM port number required
- Works with USB 1.1 & 2.0 host port
OS Support:
- Windows 7, Windows 8, Windows 10, Windows 11
- Linux and Mac OS 10.X
- Tested on Oct 2nd, 2014 this serial adapter supports Windows 11
- Note: As of June 2018 Windows XP is no longer supported. Please contact us if you require Windows XP support.
Package Contents:
- USB to RS-232 adapter
- Driver Disc *not pictured
Compatibility List:
GPS / Chartplotters / Fish Finders:
- Magellan Sportrak GPS
- Garmin GPS III Plus
- Garmin eTrex Legend
- Garmin 76S GPS
- Garmin Rino 120
- Garmin Etrex
- Garmin GPS V
- Peets weather station
- Sky Caddie
- SkyCaddie SG2 Golf GPS
- Humminbird 767
- Megellan MAP330
WEATHER STATION:
- Oregon Scientific WMR-968
- La Crosse WS-3610
- Davis Vantage Pro II weather station
AMATEUR RADIO:
- Yaseu FT-950 Amateur Radio
- Kenwood TM-D710 ham radio
- TenTec RX320 shortwave radio receiver
- Kenwood TM-D710 dual band Amateur radio
Routers: (Connects to Cisco Console cable)
- Cisco 871
Cisco 2900/3900 XL
Cisco ASA5505
Cisco 678 DSL
Cisco 2621XM
MODEMS:
- US Robotics Courier dual standard V.34
- Zoom 56k external fax modem
Embroidery Machines:
- Bernina 180 embroidery machine
OBDII Data Analyers:
- Innova 3140 / 3160 OBD2
- Equus 3130 Innova Diagnostic Code Scanner
- Autel MaxiDAS
Telescopes / Solar Controllers:
- TS-60 Morningstar Solar Controller
- Celestron 5SE Telescope
- Celestron CGEM astronomy tracking mount
POLICE SCANNER RADIO:
- Uniden BCD396XT programmable radio
- Uniden 780XLT scanner
- Uniden Bearcat BC346XT scanner
Stenograph Writers:
- Stentura 200SRT
- Stentura 400SRT
- Stentura 500
- Stentura 6000
- Stentura 6000LX
- Stentura 8000
- Stentura 8000LX
- WAVE
- DIAMANTE
INDUSTRIAL EQUIPMENT:
- Brother wire EDM machine
- Graphtec plotter
MegaSquirt car tuning
SBC ALIX Firewall
Lynx6 AL5B robot arm (Karmic RC) Matlab 2009b
Pelouze scale
DVDO iScan Duo
CNC Machines:
- Strippit HECC80-3 CNC
PlusDeck
Suunto X6HR watch
Altec Digitizer Tablet
Data Logging Digital Multi-meter
Conext uninterrupted power supply
Automation System SLC 500
Keile Micro Controller
SEL-751A relays (needs null modem adapter & acselerator software )
URC remote controls MX-850
Summa Graphics D15 vinyl cutter
AUDIO DEVICES:
- Anthem MRX 300 A/V receiver
- Anthem MRX 500 receiver
- NuVo music system
APRS unit (Byonics RTG
iRobot Create
FreeScale Codewarrior
Technological Arts Adapt9S12C32 MCU
X10 CM11A
Crestron programmer
Zebra Label Printers
Specifications
Product Specifications
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Pin-Outs
DB9 RS-232 Pin-Outs
FAQ & Compatibility List
Frequently Asked Questions:
Q: Does this item support Windows 10?
A: Yes, the USBG-232 USB to Serial Adapter Supports Windows 10.
Q: What Chipset does this item use?
A: The USBG-232 Utilizes the FTDI Chipset
Q: How do I check what COM port is assigned?
A: Please follow the Quick 1.2.3 instructions below.
- Open the Device Manager by pressing the Windows Key + R. Type “devmgmt.msc” and press Enter.
- Expand the Ports (COM & LPT) section.
- You should see a COM Port number in brackets to the right of each port ex. Com 1, there should not be any exclamation points next to the entries in the list, If there is please reinstall the driver.
Q: My serial device requires a specific COM port to function, how do I change this in Windows?
A: Please follow this link to the USB Serial Install Guide.
Optional Accessories
The USB to Serial RS232 DB9 Adapter has certain accessories that work with it.
RS232 Male to Female Serial Data Cable Complete your serial data connection with this 5ft. RS232 DB-9 Male to Female data cable for fast reliable…
Model# 9DBMF5FT
$2.95In stock
Support
Product Documentation & Drivers
Product Documentation
Software & Drivers
Need drawings, CAD files, or other compliance documentation? Click HERE
Serial F.A.Q.
Product F.A.Q.
View frequently asked product questions below. For all serial troubleshooting, visit this page.
Still need help? Reach out!
-
How do I clean and reinstall my FTDI drivers?
View Answer
-
- Download the CDM Uninstaller HERE.
- Extract the zip file, or open the “CDMuninstallerGUI.exe” utility.
- Leave the ‘Vendor ID’ set to 0403 and ‘Product ID’ set to 6001.
- Click Add.
- Click Remove Devices.
- Download the corresponding driver for your operating system and follow on-screen prompts. Windows Driver | MacOS Driver
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How can I change my device’s COM port?
View Answer
-
- Click on Start and navigate to the Control Panel
- Locate and click on Device Manager
- Under “Ports (COM & LPT)” you will find your serial device titled “USB Serial Port” along with its current COM Port.
- Right click on “USB Serial Port” and click on Properties.
- Navigate to the “Port Settings” tab and click on “Advanced…”
- Once there, the “COM Port Number:” can be changed with a dropdown menu to select the port number.
- Click your desired port number (i.e. COM2) and click “OK”.
- Click “OK” once more.
- Your serial device is now assigned to your chosen COM Port.
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How do I check to ensure the COM port is listed properly in Windows?
View AnswerTo ensure your serial device is installed properly, complete the following:
- Press Windows Key + R to open the Device Manager. Once Run comes up, type “devmgmt.msc” into the text field and press Enter.
- Expand the section labeled, Ports (COM & LPT).
- You should now see a COM number in brackets to the right of each port. If the device is installed properly, no exclamation points or question marks should be present next to the device.
-
I have everything hooked up, but nothing is functioning correctly.
View AnswerTo rule out potential issues, quickly test your individual components to ensure that they are working correctly individually, and are not the source of the problem:
- Serial cables
- Serial ports
- Serial devices
Test your components by:
- Hook up the serial cable(s), serial port(s), and serial device(s) in a different setup to see if the issue stems from a particular component, or the setup as a whole.
- Replace the serial cable, port, or device within your setup to further troubleshoot the issue’s origin.
When testing cables:
- Test each cable individually.
- Use short cables when you are testing.
When testing serial ports and devices:
- Press the Windows key + R, in Run, type devmgmt.msc, and press Enter to open the Device Manager. You can then check to see if your device is listed under Ports (COM & LPT).
- Ensure that the COM port number is the correct number for the serial device and that the software being used to connect the computer to the serial device uses the correct COM port number.
- If the device is listed with an error, follow the instructions on the website to reinstall the drivers.
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Serial communication is not functioning correctly, how can I tell if the problem caused by the adapter or my serial software application?
View AnswerOlder serial communication applications make use of legacy hardware addresses, often incompatible with PCI, PCIe, and USB to Serial products. Contact the software provider to troubleshoot.
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I am receiving an error when I try to install the drivers in Windows 8 64 bit.
View AnswerDriver Signature Enforcement in Windows 8 may need to be disabled in order to use various drivers. After disabling this feature, the driver will be allowed to install.
Note: You are required to restart your computer after disabling the Driver Signature Enforcement. Save all open work on your computer.
Disable driver signature enforcement:
- Press the Windows key + C.
- Click Settings > Change PC Settings.
- In the left pane, click General.
- In the right pane, under Advanced startup, click Restart now.
When your system restarts:
- Click Troubleshoot > Advanced options > Startup Settings > Restart.
- Press 7.
When your computer restarts, Driver Signature Enforcement will be disabled and you can install the drivers.
-
I am receiving an error when I try to install the drivers in Windows 10 64 bit.
View AnswerDriver Signature Enforcement in Windows 10 may need to be disabled in order to use various drivers. After disabling this feature, the driver will be allowed to install.
Note: You are required to restart your computer after disabling the Driver Signature Enforcement. Save all open work on your computer.
Disable Driver Signature Enforcement:
- Click the Windows icon in the taskbar.
- Click Power.
- Press and hold the Shift key and click Restart.
After your computer restarts:
- Click Troubleshoot > Advanced Options > Startup Settings > Restart.
- Press 7.
When your computer restarts, Driver Signature Enforcement will be disabled and you can install the drivers.
-
Why did the software not install properly in macOS High Sierra (10.13) or later?
View AnswerHigh Sierra 10.13 and later versions of macOS enforce strict security policy revisions. In order for the device to operate, software packages like those used in this installation must be allowed in macOS Security and Privacy settings once the software is installed.
Once the driver/software is installed, follow these steps to allow the software:
- Open System Preferences.
- Open Security & Privacy.
- Click the Allow button near the bottom of the General tab.
Reviews (26)
26 reviews for USB to Serial RS-232 DB9 Adapter FTDI Chipset w/ 15kV ESD Protection, Windows 11 Support
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Amazon Customer –
A+
Works great.
Steven Robinson Sr. –
Works perfect on Windows 10 64 bit-Plug and Play
I liked that Windows 10 recognized it instantly and loaded drivers for it, the disc was not necessary. This adapter is mechanically exactly the same as the COM connector that is found on the XP and older computers. I plugged my radio programming cable into it and the computer found it in 2 seconds. Communication to and from the radio was faultless. I don’t know why other reviewers are complaining about the female threaded studs, perhaps they don’t know what a proper COM jack is supposed to look like? I did notice some other devices similar to this one that have the correct male pins but have the hold down bolts of a female plug instead of the nuts found on a jack, but those by definition are not standard COM jacks, but are instead a mechanical corruption of the original concept. I find nothing to dislike with this device other than perhaps it could use a bit longer wire.
tazroc –
Great product
Great product arrived the next day.
Pizzaman7 –
If you need to add RS-232
I have two of these. I plug them in and they just work. I have a computer hooked up to my firewall’s console port just in case I need to communicate with it in that manner. The other one I keep in my tool bag in case there is other network equipment I need to hook up to. Preliminary build of some networking equipment this would be invaluable for. There are still times you need a COM port. It’s nice to be able to simply add it to a more modern computer. it has onboard lights so you can see activity. Really a nice device and never had problems with it.
Phil-thom –
The mini CD was a problem
I needed the USB to serial for both a Windows and MAC, fortunately it worked on both systems without a problem, however, if I had needed to install any software on my Macbook I would have had a problem. The mini CD with the software cannot be loaded in via a Slot CD reader.Consider sending a full size CD in future that will work with all readers.