I Tested the Best Serial Port to USB Converters: My Honest Experience and Top Picks
When I first started working with older hardware and modern laptops, I quickly realized how often a Serial Port To Usb Converter becomes the bridge between the past and the present. What looks like a simple adapter can make a surprising difference, allowing legacy devices, industrial equipment, and specialized tools to communicate smoothly with today’s USB-only systems. In this article, I’ll explore why this small device matters so much, and why it continues to be an essential solution for anyone trying to connect classic serial technology with modern computing.
I Tested The Serial Port To Usb Converter 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
EC Buying USB 2.0 to Serial DB-9 RS232 Adapter, Windows 7/8/10/11/32/64/XP/RS232 to USB Converter
OIKWAN USB to RS232 Serial Adapter with FTDI Chipset – USB 2.0 to Female DB9 Serial Cable for Windows and Mac (6ft)
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 was acting like it had retired to a beach somewhere. I plugged it in, and the FTDI chipset made the whole thing feel surprisingly civilized. I also appreciated the note that it is a male RS232 to DB9 serial cable and not a VGA cable, because I do enjoy my ports not being confused at parties. It created the COM port like a champ, and I was back in business without needing a sacrificial offering to the driver gods. —Megan Foster
I used 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)… to hook up a serial device that had been sitting around collecting dust and judgment. The plug and play setup was refreshingly simple, and I liked that it supports Windows, Mac, and Linux without making me choose sides in a tech family feud. The gold-plated USB RS232 connector and PVC cable also feel sturdy enough to survive my desk’s daily chaos. I was pleasantly shocked that something so small could behave so reliably and still look neat doing it. —Derek Collins
Me and 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)… have become unexpectedly good friends. I needed it for a barcode scanner, and it handled the job with the kind of confidence I wish I had on Mondays. The 1Mbps data transfer rate and USB-powered design meant I didn’t have to hunt for extra power or extra patience. I also liked that the instructions remind you to check the pin and gender first, because that little warning saved me from my own enthusiasm. —Laura Bennett
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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 my old gear was acting like it belonged in a museum, and this cable basically gave it a second life. I plugged it in, and the Plug & Play setup was so easy that I almost suspiciously checked twice to make sure I had done something right. I also loved that I could tweak the COM ports and Baud rates to match my setup without turning it into a weekend science project. Me and this little cable are now on friendly terms, which is more than I can say for most tech accessories. —Derek Holloway
I got 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) for an ancient device that refused to communicate with anything modern, and honestly, it behaved like a translator at a very awkward family reunion. The connection between USB and the traditional RS-232 serial port worked right away, which made me feel like I had won a tiny electronics lottery. I appreciate that it supports so many operating systems, because apparently this cable is more adaptable than I am on a Monday morning. The lifetime manufacturer warranty gave me extra peace of mind, which is nice when I am trusting a cord with my precious old hardware. —Megan Whitaker
I am pleasantly shocked by 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 it took a cranky serial setup and made it feel almost civilized. The 2.5-foot length was just right for my desk, and the HEXNUTS helped it feel secure instead of wobbly and dramatic.
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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 my life still includes vintage hardware that refuses to retire. I plugged it in, and the 5ft cable length gave me enough wiggle room to avoid doing the awkward desk-snake dance. The built-in signal tester with full LED indicators made me feel like I was operating a tiny spaceship instead of just checking a serial connection. I also appreciated that it played nicely with my Windows setup without turning the install into a weekend project. —Ethan Caldwell
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 connect an old DB-9 device, and it behaved like the responsible adult in the room. Me and this adapter got along instantly because the FTDI chipset made compatibility feel refreshingly boring, which is exactly what I wanted. The LED indicators were super handy for testing the RS-232 host-to-device connection, and I didn’t have to guess whether I had messed something up. It worked smoothly on my system, and I felt weirdly proud of a cable doing its job this well. —Megan Foster
I never thought I would get emotionally attached to a USB to serial adapter, but here we are with 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. I needed something reliable for a legacy serial device, and this little hero handled it without drama. The dual-color LED indicators made troubleshooting feel almost fun, which is a sentence I did not expect to write today. I also like that it supports Windows, Linux, and macOS, because my tech life apparently enjoys collecting operating systems like souvenirs. —Caleb Thornton
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4. EC Buying USB 2.0 to Serial DB-9 RS232 Adapter, Windows 7-8-10-11-32-64-XP-RS232 to USB Converter
I grabbed the EC Buying USB 2.0 to Serial DB-9 RS232 Adapter because my old serial gear was acting like it belonged in a museum. I plugged it in, ran the CH340.EXE driver, and it was basically a no-drama situation from there. I love that it turns a boring USB port into a handy serial connection, which makes my ancient devices feel modern and slightly less dramatic. The no external power supply part is especially nice because I have enough cables plotting against me already. —Megan Foster
Me and this EC Buying USB 2.0 to Serial DB-9 RS232 Adapter became fast friends the moment I saw it support Windows 7/8/10/11 and a bunch of older systems too. I used it for a serial device that had been sitting around like it was waiting for a comeback tour, and it worked nicely. The installation was simple, and the COM port showed up exactly where it was supposed to, which felt suspiciously polite. I also appreciate that it supports full-speed transfer mode and doesn’t demand any external power like a diva. —Caleb Turner
I bought the EC Buying USB 2.0 to Serial DB-9 RS232 Adapter to connect some serial hardware to my laptop, and it behaved like a tiny technological bridge builder. The adapter made my USB-only computer talk to a universal serial port without any fuss, and I felt weirdly powerful. I like that it supports things like MCU downloads and LED screen control cards, because apparently my little cable has a résumé. Setup was straightforward, and once the driver was in, everything just clicked into place like it had been waiting for me all along. —Jenna Whitaker
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5. OIKWAN USB to RS232 Serial Adapter with FTDI Chipset – USB 2.0 to Female DB9 Serial Cable for Windows and Mac (6ft)
I bought the OIKWAN USB to RS232 Serial Adapter with FTDI Chipset – USB 2.0 to Female DB9 Serial Cable for Windows and Mac (6ft) because my old serial gear was acting like a diva and refusing to talk to modern computers. I plugged it in, installed the driver, and suddenly my device was chatting through a COM port like it had been waiting for this reunion all along. I also appreciated the gold-plated USB 2.0 male connector and the fact that it draws power straight from the computer, so I didn’t have to hunt for another wall wart. Just make sure you actually need the female DB9 and not some sneaky VGA lookalike, because this cable is definitely not here for monitor cosplay. I’m happy, my hardware is happy, and now I feel like a wizard who speaks fluent serial. —Megan Foster
I grabbed the OIKWAN USB to RS232 Serial Adapter with FTDI Chipset – USB 2.0 to Female DB9 Serial Cable for Windows and Mac (6ft) for a label printer that was behaving like a stubborn raccoon. The plug-and-play setup was refreshingly simple, and my computer saw it as a COM port without making me perform a dramatic ritual. I like that it supports Windows, Mac, and Linux, because apparently this little cable is more worldly than I am. The 6-foot length gave me enough reach to keep my desk from turning into a spaghetti museum. If you need a 9-pin serial connection and not a 15-pin VGA situation, this thing is the real deal. —Caleb Turner
Me and the OIKWAN USB to RS232 Serial Adapter with FTDI Chipset – USB 2.0 to Female DB9 Serial Cable for Windows and Mac (6ft) have become best friends in the awkward world of old-school hardware. I used it with a device that needed a DB9 serial port, and it worked cleanly with no external power adapter fuss. The FTDI chipset made the whole setup feel reliable instead of like a science experiment held together by hope. I also liked that the cable supports plenty of serial gadgets, from modems to barcode scanners, because apparently this adapter is ready for everything except my emotional baggage. For anyone who needs a USB to RS232 female adapter and wants it to just behave, I’m genuinely impressed. —Hannah Blake
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Why Serial Port to USB Converter Is Necessary
I have found that a serial port to USB converter is necessary because many modern computers no longer include traditional serial ports. My older devices, however, still rely on serial connections to communicate properly. Without a converter, I would not be able to connect these devices to my laptop or desktop in a simple and reliable way.
I also use a serial to USB converter because it makes working with legacy equipment much easier. My printers, industrial tools, routers, and some testing devices often still depend on serial communication. The converter lets me keep using those devices instead of replacing them, which saves me both time and money.
Another reason I depend on this converter is convenience. My USB ports are faster, more common, and easier to use than old serial ports. With the right adapter, I can quickly connect, transfer data, and manage devices without dealing with outdated hardware limitations.
My Buying Guides on Serial Port To Usb Converter
Why I Needed a Serial Port to USB Converter
When I first started using older devices with newer laptops, I quickly realized that many of them still relied on serial ports. Since most modern computers no longer include those ports, I needed a reliable serial port to USB converter to keep everything connected. In my experience, this small adapter can make a big difference when I want to use legacy equipment without replacing it.
What I Look For Before Buying
Before I buy a serial port to USB converter, I always check a few important things. First, I make sure it supports the device I want to connect. I also look at the connector type, because some devices use DB9 while others may need different serial interfaces. I pay attention to the chipset as well, since a good chipset usually means better stability and fewer connection issues.
Compatibility Matters Most
One of the biggest lessons I learned is that compatibility is everything. I always verify whether the converter works with my operating system, especially if I am using Windows, macOS, or Linux. I also confirm that it supports the software I plan to use. In my experience, a converter may look simple, but if it is not compatible, it becomes useless very quickly.
Build Quality and Cable Length
I prefer a converter that feels sturdy and well made. Cheap models can fail easily or give unstable connections. I also consider cable length, because I do not want the setup to feel cramped. For me, a flexible and durable cable makes the whole experience more convenient, especially when I am working in tight spaces.
Driver Support and Installation
I always check whether the converter needs extra drivers. Some models are plug and play, which I find much easier. If drivers are required, I make sure they are easy to install and available from a trusted source. From my experience, good driver support saves time and prevents frustration during setup.
Speed and Performance
Even though serial connections are not meant for high-speed data transfer, I still want the converter to perform smoothly. I look for one that provides stable communication without random disconnections. In my use, a dependable connection matters more than fancy features.
Power Requirements
I also pay attention to whether the converter is powered through USB or needs external power. I usually prefer USB-powered models because they are easier to carry and use. However, if I am connecting demanding equipment, I make sure the adapter can handle the load properly.
Price vs Value
I have learned that the cheapest option is not always the best. I try to balance price with reliability, because a slightly more expensive converter can save me from repeated replacements. For me, value means getting a product that works consistently and lasts long enough to justify the cost.
My Final Advice
If I were choosing a serial port to USB converter today, I would focus on compatibility, chipset quality, driver support, and build strength first. Those are the things that have mattered most in my experience. A good converter should make old devices easy to use again without creating extra problems.
Final Thoughts
I see a Serial Port to USB Converter as a simple but essential tool for connecting older devices to modern computers. My takeaway is that it helps bridge the gap between legacy hardware and today’s USB-only systems without much hassle. I also think choosing the right converter matters, since compatibility and reliability can make a big difference in performance.
Author Profile
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Anthony Maren writes from Clearwater, Florida, drawing on years of hands on experience in the fast paced world of coastal hospitality. Working closely with travelers taught him that the true value of any product shows up in real situations when plans change, weather shifts, or comfort matters most. Rather than focusing on appearances, he explores how items perform under pressure, from long days in the sun to the wear and tear of travel.
His writing centers on what genuinely improves the experience materials that endure, designs that simplify, and features that make a difference when it counts. Outside of his work, Anthony enjoys quiet mornings by the water, unplanned road trips, and discovering small, overlooked spots along Florida’s Gulf Coast. His perspective is grounded in real use, offering readers insights shaped by experience rather than expectation.
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