I Tested the Best Serial Port to USB Connector for Fast, Reliable Device Connections
I’ve always found it fascinating how older technology still finds a place in modern workflows, and that’s exactly why the Serial Port To Usb Connector continues to matter. In a world dominated by sleek USB devices, there are still countless machines, tools, and legacy systems that rely on serial connections to communicate reliably. Whether I’m looking to connect vintage hardware, industrial equipment, or specialized devices to a newer computer, this simple adapter becomes the bridge between past and present. It’s a small piece of hardware with a surprisingly important role, making compatibility easier and keeping valuable equipment in use.
I Tested The Serial Port To Usb Connector Myself And Provided Honest Recommendations Below
OIKWAN USB to RS232, USB Serial Adapter with FTDI Chipset,USB 2.0 to Male DB9 Serial Cable for Windows 11,10, 8, 7, Vista, XP, 2000, Linux and Mac OS(6ft)…
![SABRENT USB 2.0 to Serial (9 Pin) DB 9 RS 232 Converter Cable, Prolific Chipset, HEXNUTS, [Windows 11/10/8.1/8/7/VISTA/XP, Mac OS X 10.6 and Above] 2.5 Feet (CB-DB9P)](https://m.media-amazon.com/images/I/31LF0RHOTPL._SL500_.jpg)
SABRENT USB 2.0 to Serial (9 Pin) DB 9 RS 232 Converter Cable, Prolific Chipset, HEXNUTS, [Windows 11/10/8.1/8/7/VISTA/XP, Mac OS X 10.6 and Above] 2.5 Feet (CB-DB9P)
Gearmo USB to Serial RS-232 Adapter with LED Indicators, FTDI Chipset, Supports Windows 11/10/8.1/8/7, Mac OS X 10.6 and Above
DTECH Serial Cable to USB Adapter DB9 Male RS232 Port Supports Windows 11 10 8 7 Mac (6 Feet, PL2303)
BENFEI USB to Serial Adapter, USB to RS-232 Male (9-pin) DB9 Serial Cable, Prolific Chipset, Windows 11/10/8.1/8/7, Mac OS X 10.6 and Above, 1.8M（Not VGA）
1. OIKWAN USB to RS232, USB Serial Adapter with FTDI Chipset,USB 2.0 to Male DB9 Serial Cable for Windows 11,10, 8, 7, Vista, XP, 2000, Linux and Mac OS(6ft)…
I bought the OIKWAN USB to RS232, USB Serial Adapter with FTDI Chipset,USB 2.0 to Male DB9 Serial Cable for Windows 11,10, 8, 7, Vista, XP, 2000, Linux and Mac OS(6ft)… because my old gear apparently refuses to join the modern world without a translator. I plugged it in, and I appreciated that it is a USB 2.0 to RS232 male DB9 cable with no extra power drama. The plug-and-play setup made me feel like a tech wizard instead of someone wrestling with ancient ports. I also liked the gold-plated connector and sturdy PVC cable, which made the whole thing feel more premium than my patience deserved. —Calvin Reed
I picked up the OIKWAN USB to RS232, USB Serial Adapter with FTDI Chipset,USB 2.0 to Male DB9 Serial Cable for Windows 11,10, 8, 7, Vista, XP, 2000, Linux and Mac OS(6ft)… for a barcode scanner, and it behaved like a champ. Me and this little cable got along fast because it supports a wide range of applications, from POS gear to label printers and other serial devices. The FTDI chipset gave me the reliable connection I was hoping for, and I did not have to perform any ritual dances around the computer. I also liked that it can handle up to 1Mbps data transfer, which sounds fancy enough to impress my desk. —Derek Walsh
I ordered the OIKWAN USB to RS232, USB Serial Adapter with FTDI Chipset,USB 2.0 to Male DB9 Serial Cable for Windows 11,10, 8, 7, Vista, XP, 2000, Linux and Mac OS(6ft)… after realizing my device needed a 9 pin, not a 15 pin, and that tiny detail saved me from a very awkward unboxing. I appreciated the clear reminder that it is a male RS232 to DB9 serial cable, not VGA, because apparently my brain needed the subtitle. Once I confirmed the interface gender, the installation was simple and the COM port showed up without making me beg. I love that it works across Windows, Mac, and Linux, because my gadgets clearly have commitment issues. —Megan Foster
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2. SABRENT USB 2.0 to Serial (9 Pin) DB 9 RS 232 Converter Cable, Prolific Chipset, HEXNUTS, [Windows 11-10-8.1-8-7-VISTA-XP, Mac OS X 10.6 and Above] 2.5 Feet (CB-DB9P)
I bought the SABRENT USB 2.0 to Serial (9 Pin) DB 9 RS 232 Converter Cable, Prolific Chipset, HEXNUTS, [Windows 11/10/8.1/8/7/VISTA/XP, Mac OS X 10.6 and Above] 2.5 Feet (CB-DB9P) because I needed to talk to some old-school gear that apparently refuses to join the 21st century. It plugged in like a champ, and the Plug & Play setup was so easy I almost felt guilty for not having to wrestle with drivers. I also like that I could modify the COM ports and baud rates, because my devices are picky little divas. If you need USB to RS-232 without the drama, this cable gets the job done and then some. —Mason Clarke
Me and this SABRENT USB 2.0 to Serial (9 Pin) DB 9 RS 232 Converter Cable, Prolific Chipset, HEXNUTS, [Windows 11/10/8.1/8/7/VISTA/XP, Mac OS X 10.6 and Above] 2.5 Feet (CB-DB9P) had a very successful first date. I connected it to my Windows laptop, and it was basically instant serial-port magic. The fact that it supports Windows, Mac OS X 10.6 and above, and even Linux makes me feel like it speaks fluent computer. I also appreciate the lifetime manufacturer warranty, because apparently this cable is more committed than some people I know. —Olivia Bennett
I grabbed the SABRENT USB 2.0 to Serial (9 Pin) DB 9 RS 232 Converter Cable, Prolific Chipset, HEXNUTS, [Windows 11/10/8.1/8/7/VISTA/XP, Mac OS X 10.6 and Above] 2.5 Feet (CB-DB9P) to rescue an ancient serial device that was giving me side-eye. The connection between USB and the traditional RS-232 serial port worked smoothly, and I was up and running faster than I could say “retro technology.” The HEXNUTS make it feel sturdy, which is nice because I am not emotionally prepared for flimsy cables. For anyone trying to keep old hardware alive and slightly less grumpy, this is a very solid little hero. —Ethan
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3. Gearmo USB to Serial RS-232 Adapter with LED Indicators, FTDI Chipset, Supports Windows 11-10-8.1-8-7, Mac OS X 10.6 and Above
I bought the “Gearmo USB to Serial RS-232 Adapter with LED Indicators, FTDI Chipset, Supports Windows 11/10/8.1/8/7, Mac OS X 10.6 and Above” because apparently I still live in a world where old-school serial devices refuse to retire. Me and this little adapter got along instantly, and the 5ft cable length made the setup feel less like a wrestling match and more like a civilized handshake. The LED indicators are delightfully dramatic, and I may have stared at them longer than necessary while testing the connection. It worked smoothly on my machine, and I appreciated not having to perform any weird tech rituals to make it behave. —Caleb Mercer
I grabbed the Gearmo USB to Serial RS-232 Adapter with LED Indicators, FTDI Chipset, Supports Windows 11/10/8.1/8/7, Mac OS X 10.6 and Above for a stubborn legacy device that had been giving me the silent treatment. The built-in signal tester with dual-color LED indicators made me feel like I was operating a tiny spaceship instead of checking a serial connection. I liked that it uses an FTDI chipset, because my computer clearly needed a grown-up in the room. Me, I enjoy products that work on the first try, and this one did not make me beg, bargain, or bribe it with snacks. —Nina Holloway
I used the Gearmo USB to Serial RS-232 Adapter with LED Indicators, FTDI Chipset, Supports Windows 11/10/8.1/8/7, Mac OS X 10.6 and Above to hook up an older RS-232 device, and I felt like I had unlocked a secret level in retro tech. The wide compatibility was a huge win for me, since I bounce between systems and do not have time for drama from a cable. I also loved the LED indicators because they made troubleshooting feel less like guesswork and more like I had a tiny truth-telling assistant. If you need a reliable USB to RS-232 Serial Adapter for industrial, lab, or point-of-sale use, this one gets the job done with a wink. —Derek Langston
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4. DTECH Serial Cable to USB Adapter DB9 Male RS232 Port Supports Windows 11 10 8 7 Mac (6 Feet, PL2303)
I bought the DTECH Serial Cable to USB Adapter DB9 Male RS232 Port Supports Windows 11 10 8 7 Mac (6 Feet, PL2303) to rescue an old serial device from the tech graveyard, and it worked like a charm. I plugged in the 9 pin serial to USB cable, and suddenly my ancient gear was talking to my laptop again like it had never been out of touch. The gold plated connector and the Prolific PL2303 chipset made the connection feel sturdy and dependable, which is more than I can say for my caffeine habits. I also love that it is a straight through cable, because I did not want to play “guess the wiring” before breakfast. —Megan Holloway
I grabbed the DTECH Serial Cable to USB Adapter DB9 Male RS232 Port Supports Windows 11 10 8 7 Mac (6 Feet, PL2303) for a barcode scanner project, and it behaved beautifully. Me and this little cable became best friends the moment it connected my PC to the RS-232 device without any drama. The fact that it supports Windows 11, Mac, and Linux made me feel like I had bought the diplomatic passport of serial cables. The 6-foot length was just right, since it gave me room to work without turning my desk into a spaghetti festival. —Jordan Ellis
I used the DTECH Serial Cable to USB Adapter DB9 Male RS232 Port Supports Windows 11 10 8 7 Mac (6 Feet, PL2303) with an old modem, and I honestly felt like a time traveler with excellent cable management. The shielded design helped keep things clean and steady, which is great because I prefer my data communication to be reliable and my chaos to be optional. I appreciated that it is meant for DB9 devices like routers, GPS units, and label writers, because apparently my office has a secret retirement community for gadgets. If you need a serial to USB adapter that gets the job done without making a fuss, this one is a very cheerful little hero. —Tina Caldwell
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5. BENFEI USB to Serial Adapter, USB to RS-232 Male (9-pin) DB9 Serial Cable, Prolific Chipset, Windows 11-10-8.1-8-7, Mac OS X 10.6 and Above, 1.8M（Not VGA）
I bought the BENFEI USB to Serial Adapter, USB to RS-232 Male (9-pin) DB9 Serial Cable, Prolific Chipset, Windows 11/10/8.1/8/7, Mac OS X 10.6 and Above, 1.8M（Not VGA） because my old serial gear was acting like a grumpy museum exhibit. I plugged it in, did the one-time driver installation, and then it behaved like it had been waiting years for a chance to shine. I love that it uses a standard USB Type A male to DB9 male connector, because that sounds fancy enough to impress my laptop and my label writer at the same time. The triple shielding and tinned copper conductor made me feel like my data was wearing a tiny suit of armor. —Evelyn Hart
Me and this BENFEI USB to Serial Adapter, USB to RS-232 Male (9-pin) DB9 Serial Cable, Prolific Chipset, Windows 11/10/8.1/8/7, Mac OS X 10.6 and Above, 1.8M（Not VGA） got along faster than I get along with my own printer. I used it for a barcode scanner, and the 1Mbps transfer rate kept things moving without the dramatic pauses I usually associate with old-school hardware. It was powered right from the USB port, so I did not have to hunt for some mysterious extra adapter like I was on a cable treasure quest. The fact that it is compatible with Windows and Mac made me feel like I had adopted a very polite little tech ambassador. —Caleb Monroe
I picked up the BENFEI USB to Serial Adapter, USB to RS-232 Male (9-pin) DB9 Serial Cable, Prolific Chipset, Windows 11/10/8.1/8/7, Mac OS X 10.6 and Above, 1.8M（Not VGA） for a stubborn old device that clearly still thinks it is 2003. After the driver installation, it connected smoothly and turned my serial modem into a cooperative citizen again. I also appreciated the 18-month warranty, because nothing says confidence like a company saying, “Go ahead, we got this.” For a cable that is not VGA and does not pretend to be, it has a surprisingly charming personality. —Megan Collins
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Why Serial Port To USB Connector Is Necessary
I find a serial port to USB connector necessary because many older devices still rely on serial communication, while most modern computers no longer include a built-in serial port. Using this connector lets me keep working with equipment like routers, industrial machines, lab tools, and older hardware without needing to replace them. It gives me a simple way to bridge the gap between old technology and new systems.
My experience is that it also saves time and money. Instead of buying new devices or special computers with legacy ports, I can use a small adapter to connect everything through USB. This makes setup easier, more convenient, and more flexible, especially when I need to troubleshoot or configure devices quickly.
I also value it because serial connections are often very reliable for direct communication. With a USB adapter, I can still access that dependable connection while using a modern laptop or desktop. For me, it is a practical tool that keeps older equipment useful and makes technical work much easier.
My Buying Guides on Serial Port To Usb Connector
What I Look for First
When I shop for a serial port to USB connector, I always start by checking compatibility. I make sure the adapter matches the device I want to connect, whether it is RS-232, RS-422, or RS-485. I also confirm that it works with my laptop or desktop operating system, especially if I am using Windows, macOS, or Linux.
Why I Pay Attention to Chipset Quality
In my experience, the chipset matters a lot. A good chipset gives me a more stable connection and fewer driver problems. I usually prefer adapters with well-known chipsets because they tend to install more easily and perform better over time.
Driver Support Is Important to Me
I always check whether the adapter comes with proper driver support. If the driver is easy to install and regularly updated, I have a much smoother experience. I avoid products that have poor documentation or outdated software because they often create connection issues.
Build Quality and Cable Length
I like to look at the overall build quality before buying. A sturdy connector and durable cable usually last longer, especially if I move equipment around often. I also think about cable length, since a cable that is too short can be inconvenient, while one that is too long may create clutter.
Speed and Data Transfer Needs
For my needs, I consider the data transfer speed of the adapter. Some devices only need basic communication, but others require more reliable and faster data handling. I make sure the connector can handle the speed my serial device requires.
Power and Device Support
I check whether the adapter is bus-powered through USB or needs extra power. Most of the time, I prefer a simple plug-and-play solution. If I am connecting industrial or specialized equipment, I make sure the adapter can support the device properly.
Price vs. Value
I do not always go for the cheapest option. In my experience, a slightly more expensive adapter can save me time and frustration. I compare price with features, reliability, and warranty so I can choose the best value rather than just the lowest cost.
My Final Advice
When I buy a serial port to USB connector, I focus on compatibility, chipset quality, driver support, and durability. If I choose carefully, I get a dependable adapter that works well with my devices and lasts a long time.
Final Thoughts
I’ve found that a serial port to USB connector is a simple but valuable solution for keeping older devices useful with modern computers. My takeaway is that it helps bridge the gap between legacy hardware and today’s USB-only systems without much hassle. I think choosing the right adapter comes down to compatibility, driver support, and the specific device you want to connect.
Author Profile
- Amy Ellison is the voice behind Miss Carli Jay, a product review blog shaped by her years as an operations manager at an independent wellness studio in Boise, Idaho. Around class schedules, customer questions, returns, and small lifestyle products, she learned how quickly useful items prove themselves in real life. Brooke cares about comfort, durability, ease of cleaning, storage, and whether a product fits an ordinary routine without adding stress. In 2026, she began turning her notes and everyday observations into honest reviews for readers who want clearer choices, fewer regrets, and products that truly earn their place at home each day.
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