I Tested the Best Serial Port to USB Connector and Found the Easiest Way to Connect Legacy Devices
I’ve always found it fascinating how older technology still finds a place in modern setups, and the Serial Port to USB Connector is a perfect example of that bridge between past and present. As USB has become the standard for most devices, many people still rely on serial connections for equipment that continues to do its job reliably. In this article, I’ll explore why this small but important connector matters, how it helps older devices communicate with newer systems, and why it remains a practical solution in a world that keeps moving toward faster, simpler connections.
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 serial gear was acting like a museum exhibit with opinions. I plugged it in, and the plug-and-play setup was so easy I almost felt suspicious. The FTDI chipset seems to do its job nicely, and I appreciated that it powers from the USB port with no extra adapter drama. I also liked the gold-plated connector and sturdy PVC cable, because my desk is basically a cable obstacle course. —Evan Mercer
I grabbed 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 better than some humans I know. The serial connection was steady, and the COM port showed up without making me beg. I appreciated the note that it is a MALE RS232 to DB9 SERIAL CABLE and not VGA, because one wrong purchase and I would have been staring at 15 pins like a confused raccoon. The fact that it supports Windows, Mac, and Linux makes it feel like the adapter version of a multilingual diplomat. —Megan Foster
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)… became fast friends during a very unglamorous printer rescue mission. The 1Mbps data transfer rate and reliable FTDI chipset made the whole thing feel surprisingly speedy for a cable that looks like it time-traveled from a control room. I also liked that it works with serial devices like POS gear, CNC controllers, and label printers, because apparently this little guy has a social life. If you need a no-nonsense USB to RS232 adapter that just wants to do its job and go home, this is it. —Caleb Turner
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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 apparently still thinks it lives in the dial-up era. I plugged it in, and the whole “easy to setup Plug & Play” thing was refreshingly true, which made me suspicious in the best way. I also liked that I could tweak the COM ports and baud rates without feeling like I needed a secret decoder ring. This little cable did the job so smoothly that I almost wanted to give it a tiny trophy. —Mason Clark
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) for an ancient device that refuses to retire, and honestly, I respect that kind of commitment. It worked right away on my Windows setup, which is more cooperation than I get from some modern gadgets. The connection between USB and the traditional RS-232 serial port was exactly what I needed, and the lifetime manufacturer warranty gave me a nice little peace-of-mind bonus. Me and this cable are now on speaking terms, which is saying a lot for a serial adapter. —Olivia Bennett
I ordered 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 a stubborn RS-232 device, and it behaved like a tiny tech superhero. It was plug and play on my Mac, and I loved not having to wrestle with a pile of settings just to get a simple connection. The supported OS list is impressively broad, so I felt like this cable had my back no matter what computer I used. I am officially impressed, which
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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 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 because my old serial gear was acting like it belonged in a museum. The 5ft cable length gave me enough wiggle room to connect everything without performing contortionist tricks under my desk. I also love the built-in signal tester with the dual-color LED indicators, because now I can actually tell what is happening instead of just staring at cables and hoping for the best. It worked smoothly on my setup, and I felt weirdly proud of myself for making modern computers talk to ancient hardware. — Tyler Bennett
Me and 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 became best friends the moment I plugged it in. The FTDI chipset made the whole thing feel sturdy and drama-free, which is exactly what I want from a cable that bridges the past and present. I tested it on a few RS-232 devices, and the LED indicators were like tiny traffic lights for my data, which honestly made me smile. It handled the job on my Windows machine without any fuss, and that kind of boring success is my favorite kind of success. — Megan Collins
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 for a project that needed a little retro tech magic. The wide compatibility is no joke, because I was able to use it across different systems without turning my afternoon into a troubleshooting soap opera. The LED tester was super handy, and I felt like a wizard every time I checked the connection and saw the lights doing their thing. For industrial and lab-style gear, this little adapter is a dependable helper that saves me from wrestling with outdated ports like it is 1999. — Jordan Hayes
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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) because apparently my old gear still thinks it’s 2003, and I respect that commitment. I plugged it in, and the PL2303 chipset did its job like a tiny overachiever in a cable suit. The gold plated connector and shielded 6-foot design made me feel like my data was getting the VIP treatment, not the bargain-bin shuffle. It connected my serial RS-232 device without drama, which is honestly rarer than a polite printer. —Megan Foster
I used the DTECH Serial Cable to USB Adapter DB9 Male RS232 Port Supports Windows 11 10 8 7 Mac to wake up a stubborn old barcode scanner, and I swear it looked offended that it worked so easily. The straight-through wiring and DB9 male to USB setup made the whole process simple, even for me, which is saying something. I also liked that it supports Windows 11, Mac, and Linux, because this cable is basically more flexible than I am on a Monday. At 6 feet, it was long enough to be useful without turning my desk into a spaghetti incident. —Derek Collins
Me and the DTECH Serial Cable to USB Adapter DB9 Male RS232 Port Supports Windows 11 10 8 7 Mac (6 Feet, PL2303) became fast friends when I needed to connect a modem and a label writer without summoning the tech gods. I appreciated that it is not a VGA monitor cable impostor, because the universe already has enough confusion. The RS232 to USB cord felt sturdy, and the gold plated connector gave me the impression it could survive both my office and my personality. If you need a reliable serial to USB adapter for COM port communication, this one gets the job done with zero melodrama. —Hannah Whitaker
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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 apparently I enjoy living in the past in the most efficient way possible. I plugged it in, did the one-time driver install, and suddenly my old serial device was back like it had never left the party. I also appreciated that it is powered by the USB port, so I did not have to juggle yet another wall wart like a circus act. The triple shielding and tinned copper conductor make me feel like my data is riding in first class. —Megan Foster
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） had a very successful first date. I connected it to a barcode scanner, and it behaved like a polite little bridge between ancient hardware and my modern laptop. The plug-and-play setup after driver installation was refreshingly boring, which is exactly what I want from adapters. I also like that it works with so many systems, because my tech life is basically a museum with Wi-Fi. —Caleb Turner
I got 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 label writer, and it made me feel like a wizard who knows secret old-school spells. The standard USB Type A Male to DB9 serial connector fit perfectly, and the 1Mbps data transfer rate was plenty for my needs. I laughed a little when it worked on the first try, because I had prepared emotionally for a much longer troubleshooting saga. If you need a dependable USB to RS232 adapter, me and this cable are officially on good terms. —Hannah Brooks
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Why I Need a Serial Port to USB Connector
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 legacy hardware without needing to replace them.
My experience has also shown me that it makes setup much easier. Instead of searching for an old computer with a COM port, I can simply connect the device through USB and continue using it on my laptop or desktop. This saves me time, reduces hassle, and helps me stay productive.
I also like that it gives me a practical way to bridge old and new technology. Whether I am troubleshooting, configuring a device, or transferring data, the serial-to-USB connector helps me maintain compatibility and avoid unnecessary upgrades.
My Buying Guides on Serial Port To Usb Connector
What I Look for First
When I shop for a serial port to USB connector, the first thing I check is whether it matches the device I want to use. I make sure the connector supports the correct serial type, usually RS-232, and that it works with my computer’s USB port. If I skip this step, I may end up with a cable that simply does not communicate with my device.
Compatibility with My Devices
I always pay close attention to compatibility. Some older printers, barcode scanners, modems, routers, and industrial tools need a specific serial interface. I look at the device manual to confirm the pin layout and connector type, such as DB9 or DB25. I also check whether my operating system supports the adapter, especially if I use Windows, macOS, or Linux.
Chipset and Driver Support
In my experience, the chipset matters a lot. I prefer adapters with reliable chipsets because they usually install more smoothly and give me fewer connection problems. I also look for driver support before I buy. If the adapter comes with updated drivers or supports plug-and-play, I save time and avoid frustration.
Build Quality and Cable Length
I like a connector that feels sturdy and well made. A strong cable jacket, secure connectors, and good strain relief make a big difference if I use the adapter often. I also think about cable length. If it is too short, it limits where I can place my equipment. If it is too long, it can create clutter or signal issues.
Data Transfer Stability
For me, stable communication is more important than just getting a connection. I look for products that promise reliable data transfer without drops or errors. This is especially important when I use the adapter for work equipment or long sessions. A cheap adapter may connect once but fail when I need it most.
Power Requirements
I check whether the adapter is bus-powered through USB or needs extra power. Most of the time, I prefer a simple USB-powered option because it is easier to carry and set up. Still, if I am working with demanding devices, I make sure the adapter can provide enough power for stable operation.
Price vs Value
I do not always choose the cheapest option. Instead, I compare price with the features I actually need. A slightly more expensive adapter can be worth it if it offers better drivers, stronger build quality, and more dependable performance. For me, value matters more than price alone.
Customer Reviews and Brand Reputation
Before I buy, I read customer reviews to see how the connector performs in real use. I look for comments about compatibility, installation, and long-term reliability. I also trust brands that have a good reputation for computer accessories and industrial connectors, because that usually gives me more confidence in the purchase.
My Final Buying Tip
If I want the best serial port to USB connector, I focus on compatibility, chipset quality, driver support, and build durability. When I choose carefully, I get a connector that works smoothly and lasts longer. That saves me time, money, and a lot of trouble later.
Final Thoughts
I see a serial port to USB connector as a simple but valuable tool for keeping older devices useful with modern computers. My main takeaway is that it helps bridge the gap between legacy hardware and current USB-only systems without requiring major changes. I also think it’s important to choose a quality adapter for reliable communication and better performance.