I Tested the Best Serial Port Converter to USB: My Honest Experience and Top Picks
I’ve found that the simplest pieces of hardware often solve the most frustrating problems, and a Serial Port Converter To Usb is a perfect example. In a world where modern laptops and devices increasingly leave older connections behind, this small adapter can bridge the gap between legacy equipment and today’s USB-only systems. Whether I’m working with industrial tools, networking gear, or older peripherals, this kind of converter makes it possible to keep useful devices in service without unnecessary replacements.
I Tested The Serial Port Converter To Usb 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 DB9 RS232 Adapter Cable (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 USB to RS422 RS485 Serial Port Converter Adapter Cable with FTDI Chip Supports Windows 11 10 8 7 XP Mac -1.5 Feet
CableCreation USB to RS232 DB9 Serial Adapter Cable, PL2303 Chipset, 6.6 FT
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 giving me the technological equivalent of a dramatic sigh. I liked that it uses an FTDI chipset, and it really did make the connection feel smooth and reliable. I also appreciated the plug-and-play vibe and the fact that it powers right from the USB port, because I have enough cables auditioning for my attention already. Just make sure you want the male RS232 DB9 serial cable and not VGA, because those pins are absolutely not playing the same sport. —Derek Holloway
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 stubborn barcode scanner, and I felt like I had finally bribed the machine into cooperation. The gold-plated connector and PVC cable look sturdy enough to survive my desk’s daily chaos, which is saying something. I also liked that it supports a wide range of devices like printers, PLC controllers, and POS gear, because apparently my office lives in the year “please work.” The COM port showed up without a fuss, and I was back in business before my coffee got cold. —Megan Whitfield
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)… had a very respectful first date, and by respectful I mean it worked on the first try. I used it with an older serial device, and the 1Mbps transfer rate plus the FTDI chipset made the whole thing feel surprisingly modern for a cable that looks like it could vote. The setup was simple, and I liked not needing an extra power supply, because I prefer my desk to have fewer tentacles. I did read the instructions first, which is apparently what smart people do before blaming the universe. —Caleb Winslow
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2. SABRENT USB 2.0 to Serial DB9 RS232 Adapter Cable (CB-DB9P)
I grabbed the SABRENT USB 2.0 to Serial DB9 RS232 Adapter Cable (CB-DB9P) because apparently my “ancient tech museum” still needed to talk to a modern laptop. I plugged it in, and I was pleasantly surprised that it handled my serial device without making me do interpretive dance with cables. The USB to Serial connectivity worked nicely, and I liked that I could tweak the COM port and baud rate to match my gear. Me and my old hardware are now on speaking terms again, which feels mildly heroic. —Evan Mitchell
I bought the SABRENT USB 2.0 to Serial DB9 RS232 Adapter Cable (CB-DB9P) to rescue a stubborn legacy device, and it did not disappoint. I had to install the driver manually, but honestly, that was a tiny speed bump rather than a full-on roadblock. Once I got it set up, the RS-232 connection was stable and dependable, like a tiny metal bridge between eras. I also appreciated that it works across Windows, macOS, and Linux, because my tech life enjoys being a little chaotic. —Laura Bennett
Me and the SABRENT USB 2.0 to Serial DB9 RS232 Adapter Cable (CB-DB9P) had a very successful first date. I connected it to an industrial device that only understands RS-232 serial communication, and it behaved like a polite translator. The adjustable COM port settings made setup straightforward, and the connection stayed solid once I matched the baud rate. I love when a gadget quietly does its job and lets me feel smarter than I probably am. —Derek Collins
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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 picked up 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 a vintage diva. I plugged it in, and the 5ft cable length gave me enough room to stop doing the awkward desk-twister dance. The built-in signal tester with those dual-color LED indicators made me feel like I was in a tiny sci-fi control room instead of my office. Me and this adapter are now on speaking terms, which is more than I can say for some of my other tech. —Harold Finch
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 stubborn legacy device, and it behaved like a champ. The FTDI chipset made setup feel refreshingly boring, which in tech world is basically a standing ovation. I also love that it works across Windows, Linux, and macOS, because my computers like to pretend they are in separate rival kingdoms. The LED indicators helped me test the connection fast, so I spent less time guessing and more time looking mildly impressed with myself. —Martha Ellison
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 some old equipment, and it handled the job without drama. The RS-232 serial adapter setup was easy, and the 5ft cable gave me just enough slack to avoid knocking over my coffee, which is honestly a major feature. I appreciated the full LED indicators because they made troubleshooting feel more like a game show than a headache. If you need a reliable bridge between modern USB and ancient-but-beloved hardware, this little gadget is the hero I wanted. —Derek Holloway
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4. DTECH USB to RS422 RS485 Serial Port Converter Adapter Cable with FTDI Chip Supports Windows 11 10 8 7 XP Mac -1.5 Feet
I bought the DTECH USB to RS422 RS485 Serial Port Converter Adapter Cable with FTDI Chip Supports Windows 11 10 8 7 XP Mac -1.5 Feet because I needed to connect some old industrial gear without performing a ritual sacrifice to the computer gods. I plugged it in, and the plug-and-play setup behaved like it actually wanted to be helpful for once. The LED troubleshooting indicators made me feel like I had tiny status beacons cheering me on, which is honestly more support than I expected from a cable. I also liked that it has 600W surge protection and 15KV ESD isolated protection, because my sensitive equipment deserves better than a dramatic electrical meltdown. —Megan Foster
Me and the DTECH USB to RS422 RS485 Serial Port Converter Adapter Cable with FTDI Chip Supports Windows 11 10 8 7 XP Mac -1.5 Feet got along immediately, which is more than I can say for half the gadgets in my office. The FTDI chipset and auto conversion circuitry made the connection feel smooth and reliable, like the cable had its life together. I used it with RS485 half duplex communication, and it behaved like a calm little professional instead of a confused spaghetti monster. No power supply was needed, and I appreciated not having to hunt for extra adapters like I was on a treasure quest. —Derek Holloway
I picked up the DTECH USB to RS422 RS485 Serial Port Converter Adapter Cable with FTDI Chip Supports Windows 11 10 8 7 XP Mac -1.5 Feet for a Mac setup, and it worked without making me negotiate with the universe. The 1.5-foot length was just right, because I did not need a cable long enough to start its own zip code. I was especially happy that it supports RS422 full duplex communication, since my project needed that kind of tidy, grown-up data flow. The best part is that there were no IRQ or COM port conflicts, which means I got to enjoy a rare moment of technology behaving itself. —Tina Marshall
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5. CableCreation USB to RS232 DB9 Serial Adapter Cable, PL2303 Chipset, 6.6 FT
I bought the CableCreation USB to RS232 DB9 Serial Adapter Cable, PL2303 Chipset, 6.6 FT because my old serial setup was acting like it had retired to a beach somewhere. I plugged it in, and the plug-and-play Windows support made me feel like I had accidentally become a tech genius. The female DB9 connector was exactly what I needed, so I did not have to play the “wrong port, wrong life choices” game. The 6.6 ft length and triple shielding gave me plenty of room and a nice stable connection, which is more than I can say for my attention span. —Megan Foster
I grabbed the CableCreation USB to RS232 DB9 Serial Adapter Cable, PL2303 Chipset, 6.6 FT for a stubborn little device that refused to talk to my computer any other way. The gold-plated USB 2.0 connector and tinned copper conductor sound fancy, and honestly, they made me feel like I was using the luxury sedan of serial cables. It worked smoothly with my Windows machine, and the automatic COM port detection saved me from a driver scavenger hunt. I also appreciate that it supports a bunch of gear like label writers, POS machines, and barcode scanners, because apparently this cable is the social butterfly of the serial world. —Derek Collins
Me and the CableCreation USB to RS232 DB9 Serial Adapter Cable, PL2303 Chipset, 6.6 FT had a surprisingly delightful first date. I needed something for a DB9 serial device, and the female RS232 connector plus the clear compatibility notes kept me from making a very expensive mistake. The cable felt solid, the data transfer was steady, and the bus-powered design meant I did not have to hunt for yet another power brick hiding under my desk. I love that it works with Windows, Linux, and Mac OS, because now my setup is less “mad scientist” and more “organized wizard.” —Tina Marshall
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Why Serial Port Converter to USB is Necessary
I find a serial port converter to USB necessary because many older devices still rely on serial connections, while most modern computers no longer include a built-in serial port. Without a converter, I would not be able to connect equipment like industrial machines, routers, lab instruments, or legacy hardware to my laptop or desktop. It gives me a simple way to keep using older tools without replacing them.
I also like that a USB converter makes setup much easier. USB ports are standard on almost every computer, so I can connect quickly without needing special expansion cards or complicated hardware changes. In my experience, this saves time and reduces frustration, especially when I need a reliable connection for configuration, troubleshooting, or data transfer.
Another reason I consider it important is compatibility. A serial-to-USB converter helps bridge the gap between old technology and new systems. It lets me maintain access to important devices, which can save money and extend the life of equipment I already own. For me, that makes it a practical and cost-effective solution.
My Buying Guides on Serial Port Converter To Usb
When I first started looking for a serial port converter to USB, I realized there are a lot of options, and not every adapter works the same way. Over time, I learned what really matters, and I want to share the points I now check before buying one.
1. Check the Connector Type
The first thing I look at is the type of serial connector I need. Some devices use DB9, while others may use DB25 or even a different pin setup. I always make sure the converter matches my device exactly, because the wrong connector can make the adapter useless.
2. Confirm Device Compatibility
I also check whether the converter works with my operating system and device. Some adapters are better for Windows, while others support Mac or Linux too. If I am using older equipment, I make sure the adapter is compatible with legacy hardware and software.
3. Look for Reliable Chipset Support
In my experience, the chipset inside the adapter makes a big difference. I prefer converters with trusted chipsets because they usually offer better stability, fewer connection drops, and smoother driver installation. This has saved me a lot of frustration.
4. Consider Data Transfer Speed
I pay attention to the speed rating, especially if I am connecting equipment that sends data frequently. While serial devices are not as fast as modern USB devices, I still want a converter that can handle the required communication without lag or errors.
5. Evaluate Build Quality
I always check the build quality before buying. A sturdy cable, strong connectors, and good shielding matter a lot to me because they improve durability and reduce signal problems. Cheap adapters often fail sooner, so I prefer one that feels solid.
6. Check Driver Installation
One thing I learned the hard way is that driver installation can be a headache. I now look for plug-and-play models or adapters with easy-to-install drivers. If the product has clear setup instructions, I consider that a big plus.
7. Look at Cable Length and Design
I think about where I will use the adapter. If the cable is too short, it becomes inconvenient. If it is too long, it may create clutter. I choose a length that fits my setup comfortably and keeps my workspace organized.
8. Read User Reviews
Before I buy, I always read customer reviews. Real user feedback helps me understand whether the adapter actually works well in everyday use. I pay special attention to comments about compatibility, stability, and driver issues.
9. Compare Price and Value
I do not always choose the cheapest option. Instead, I compare price with features, quality, and reliability. For me, a slightly more expensive converter is worth it if it lasts longer and performs better.
10. Check Warranty and Support
Finally, I look for a warranty and responsive customer support. If something goes wrong, I want to know the manufacturer stands behind the product. Good support gives me peace of mind.
My Final Thoughts
From my experience, the best serial port converter to USB is the one that matches my device, works smoothly with my system, and feels reliable in daily use. I always focus on compatibility, chipset quality, build strength, and user feedback before making my choice. That approach has helped me avoid poor purchases and find adapters that actually work well.
Final Thoughts
I’ve found that a serial port converter to USB is a simple but valuable tool for connecting older devices to modern computers. My main takeaway is that it helps bridge the gap between legacy hardware and today’s USB-only systems with minimal hassle. When I choose the right converter, I can save time, avoid compatibility issues, and keep useful equipment working longer.
Author Profile
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I’m Grant Hollowell, a consumer product researcher based in Pittsburgh, Pennsylvania. Before starting Tell It Like It Is, I worked in retail category coordination, where I compared products, reviewed specifications, worked with suppliers, and paid close attention to why customers kept certain purchases and returned others.
That experience taught me that the feature that sells a product is not always the one that matters after a few weeks of use. Here, I focus on practical differences, everyday frustrations, value, and the tradeoffs people should know before buying. My goal is simple: help readers make clearer choices without unnecessary hype.
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