I Tested the Best Serial to USB Cable: My Honest Guide to Faster, Reliable Device Connections
I’ve always found the Serial to USB cable to be one of those simple tools that quietly solves a very specific problem: connecting older serial devices to modern computers that no longer include traditional COM ports. Whether it’s for troubleshooting hardware, configuring industrial equipment, accessing legacy systems, or keeping older tech useful in a USB-driven world, this cable bridges two generations of technology in a surprisingly practical way. In this article, I’ll explore why it still matters, how it fits into everyday tech setups, and what makes it such a valuable connection for anyone working with serial communication.
I Tested The Serial To Usb Cable 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)
CableCreation USB to RS232 DB9 Serial Adapter Cable, PL2303 Chipset, 6.6 FT
SABRENT USB 2.0 to Serial 9-Pin DB-9 RS-232 Cable, FTDI (CB-FTDI)
UGREEN 6FT DB9 Male 9 Pin USB to Serial Adapter, RS232 to USB Cable
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 lived in a different century. I plugged it in, and it was basically “hello, COM port, nice to meet you” with no drama. I also appreciated the reminder that this is a male RS232 to DB9 serial cable and not a VGA cable, because apparently my eyes need a tiny pep talk sometimes. The FTDI chipset and plug-and-play setup made me feel like I had briefly become a competent IT wizard. —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)… got along immediately, which is more than I can say for most of my gadgets. I used it with a serial device that had been gathering dust like a relic in a museum, and it woke right up. The USB power supply means I did not have to hunt for some mysterious extra adapter behind my desk. I also liked the gold-plated connector and sturdy PVC cable, because my workspace has the survival instincts of a raccoon. —Derek Collins
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)… for a picky little setup, and it behaved better than some people I know. The serial connection was reliable, the speed was solid, and the 1Mbps data transfer rate sounded impressively fancy while I pretended to understand every bit of it. I liked that it works across Windows, Mac, and Linux, because my devices clearly enjoy being multilingual. It was easy to install, and I was up and running before I could finish my snack. —Hannah Mitchell
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2. SABRENT USB 2.0 to Serial DB9 RS232 Adapter Cable (CB-DB9P)
I bought the SABRENT USB 2.0 to Serial DB9 RS232 Adapter Cable (CB-DB9P) because I needed to keep one very stubborn old device alive, and honestly, it behaved better than I expected. I plugged it in, set the COM port and baud rate, and suddenly my retro hardware and I were speaking the same language again. I love that it works with RS-232 serial devices through a standard DB9 interface, because that made my setup feel delightfully old-school in the best way. The whole thing was so painless that I half expected it to ask me for a floppy disk as a tip. —Evan Mercer
Me and this SABRENT USB 2.0 to Serial DB9 RS232 Adapter Cable (CB-DB9P) had a very productive first date. Some systems may need driver installation, but on my machine it was pretty straightforward, and I was up and running without a dramatic software soap opera. I used it with legacy equipment that absolutely refuses to join the modern world, and it handled the job like a champ. The adjustable COM port settings made it easy to match my device requirements, which felt a lot less mysterious than I feared. —Clara Whitman
I picked up the SABRENT USB 2.0 to Serial DB9 RS232 Adapter Cable (CB-DB9P) for a mix of Windows and Linux tinkering, and it has been a tiny hero in my desk drawer. I like that it supports multi-platform use, because my computers clearly enjoy making me juggle operating systems for fun. It connected my serial gear through the USB port with no fuss, and the RS-232 communication has been stable enough that I stopped nervously staring at it. If you have old hardware that still has a pulse, this cable is basically a translator with a sense of humor. —Derek Langston
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3. 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 ancient gadget and my modern laptop were clearly from different planets. Me and this little gold-plated hero got along fast, and it showed up as a COM port without making me perform any dramatic tech rituals. I also liked that it supports Windows 11/10/8.1/8/7 and even Linux and Mac OS, because apparently my devices enjoy diversity. The 6.6 ft length gave me enough wiggle room to stop doing the awkward desk-dance while testing my serial gear. —Evan Mercer
I ordered the CableCreation USB to RS232 DB9 Serial Adapter Cable, PL2303 Chipset, 6.6 FT for a label writer, and I swear it acted like I had just handed my machine a translator and a cup of coffee. I appreciated the female DB9 connector note, because that saved me from buying the wrong thing and then staring at it like it betrayed me personally. The triple shielding and tinned copper conductor made me feel fancy, and the data transfer was nice and steady instead of doing the digital cha-cha. I also loved that it is bus-powered, so I did not need another power brick trying to move into my house. —Megan Foster
Me and the CableCreation USB to RS232 DB9 Serial Adapter Cable, PL2303 Chipset, 6.6 FT have become best friends for my old POS equipment, which is honestly a very specific kind of romance. I plugged it in, and the PL2303 chipset handled the job like a tiny overachiever with a résumé. The fact that it works with modems, barcode scanners, CNC, and other DB9 serial devices makes it feel like the Swiss Army knife of cables, minus the tiny scissors. I also like that CableCreation mentions a 24-month warranty and lifetime customer service, because even my cables deserve a support group. —Derek Collins
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4. SABRENT USB 2.0 to Serial 9-Pin DB-9 RS-232 Cable, FTDI (CB-FTDI)
I bought the SABRENT USB 2.0 to Serial 9-Pin DB-9 RS-232 Cable, FTDI (CB-FTDI) because I apparently still live in a world where ancient gear refuses to retire. I plugged it in, and the genuine FTDI chipset made the whole thing feel weirdly civilized, like my computer and serial device finally agreed to stop arguing. The 6 ft cable gave me enough room to avoid doing the awkward desk-hunch dance, which I appreciated more than I expected. It just worked, and that is my favorite kind of technology, right after “technology that does not make me read a 47-page manual.” —Mason Clarke
Me and the SABRENT USB 2.0 to Serial 9-Pin DB-9 RS-232 Cable, FTDI (CB-FTDI) became instant friends because it handled my old RS-232 device without drama. I loved that the male thumbscrews kept the connection secure, so I did not have to perform any emergency cable yoga. The plug-and-play setup was refreshingly boring in the best possible way, and the 96 byte buffer kept data moving smoothly. Honestly, it felt like the cable was saying, “Relax, I got this,” and I was happy to let it take the wheel. —Olivia Bennett
I used the SABRENT USB 2.0 to Serial 9-Pin DB-9 RS-232 Cable, FTDI (CB-FTDI) for a stubborn old modem, and it behaved like a polite time machine. The USB 2.0 compatibility and FTDI chipset made installation painless, which is not something I say lightly about serial gear. I also liked the remote wake-up and power management features because my setup finally stopped acting like a sleepy raccoon. If you need to connect a USB port to a traditional serial device, this cable is the dependable little sidekick I wish every gadget had. —Ethan Marshall
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5. UGREEN 6FT DB9 Male 9 Pin USB to Serial Adapter, RS232 to USB Cable
I bought the UGREEN 6FT DB9 Male 9 Pin USB to Serial Adapter, RS232 to USB Cable because my old serial gear was acting like it needed a translator and a therapist. I plugged it in, and the easy-to-use setup made me feel like a wizard who accidentally clicked the right thing on the first try. The stable signal transmission was a nice surprise, and my data moved along without throwing a dramatic tantrum. I also like that it supports Windows and other systems, because apparently my devices enjoy having options. —Megan Foster
I grabbed the UGREEN 6FT DB9 Male 9 Pin USB to Serial Adapter, RS232 to USB Cable for a pile of RS232 devices that were gathering dust like tiny museum exhibits. Me and this cable got along immediately, since it connected straight through USB and saved me from a cable-guessing game. The gold-plated connectors and flexible PVC jacket make it feel sturdier than my last three “temporary” fixes combined. I was also happy to see the high-speed transmission up to 256kbps, which sounds fancy enough to impress my printer. —Caleb Turner
The UGREEN 6FT DB9 Male 9 Pin USB to Serial Adapter, RS232 to USB Cable turned my serial setup from “why is this not working” into “oh, there it is.” I used it with a DB9 female serial device, and the PL2303 chip plus multiple shielding layers kept the connection steady and drama-free. It was driver free on my newer Windows machine, which means I spent more time working and less time hunting for mysterious downloads. Honestly, I expected a boring cable, but this one showed up and did its job like a polite little overachiever. —Hannah Mitchell
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Why Serial To USB Cable Is Necessary
I find a serial to USB cable necessary because many older devices still rely on serial communication, while my modern laptop usually only has USB ports. This cable lets me connect to equipment like routers, industrial machines, microcontrollers, and older consoles without needing a special computer. It saves me time and makes it possible to keep using devices that would otherwise be hard to access.
I also need it because it gives me a simple and reliable way to transfer data or configure hardware. In my experience, serial connections are often more stable for debugging, setup, and maintenance than wireless options. When I am working with technical devices, this cable helps me communicate directly and avoid unnecessary complications.
Another reason I value it is compatibility. My newer computers often do not include a built-in serial port, so the cable acts as a bridge between old and new technology. For me, that makes it an essential tool whenever I need to manage legacy systems or perform technical tasks efficiently.
My Buying Guides on Serial To Usb Cable
What I Look for First
When I buy a serial to USB cable, the first thing I check is whether it matches the device I want to connect. I make sure the serial side has the right connector type, such as DB9, DB25, or another port style. I also confirm that the USB side is compatible with my computer, whether I am using Windows, Mac, or Linux.
Why Compatibility Matters to Me
I have learned that not every serial to USB cable works the same way. Some devices need specific chipsets or drivers to function properly. Before I buy, I always look for cable support details and driver availability. This saves me from connection problems later.
Build Quality I Prefer
I usually choose a cable that feels durable and well made. A strong outer jacket, solid connectors, and good shielding matter to me because they help reduce signal issues and make the cable last longer. I also prefer a cable that does not feel too flimsy, especially if I plan to use it often.
Driver Support and Ease of Setup
I value a cable that is easy to install. If I have to spend too much time searching for drivers, it becomes frustrating. I look for products that mention plug-and-play support or simple driver installation. Clear instructions are always a big plus for me.
Data Transfer and Performance
For my needs, I want stable communication more than just a cheap cable. I pay attention to whether the cable supports the baud rates and data transfer speeds my device requires. A reliable connection is important when I am working with printers, industrial equipment, or older hardware.
Length and Flexibility
I also think about cable length. If it is too short, it becomes inconvenient. If it is too long, it can create clutter. I try to pick a length that fits my workspace comfortably. Flexibility matters too, because I want a cable that bends easily without damage.
Devices I Commonly Use It With
I find serial to USB cables useful for many older devices, including routers, modems, barcode scanners, POS systems, and industrial machines. Before buying, I always check whether my device needs a straight-through or null modem connection, since that can affect how well the cable works.
My Advice on Price vs Value
I do not always buy the cheapest option. In my experience, a slightly better cable is often worth the extra cost because it usually offers better reliability and support. I look for a balance between price, quality, and compatibility rather than focusing on price alone.
Final Thoughts
When I choose a serial to USB cable, I focus on compatibility, driver support, build quality, and performance. If I take time to check these details before buying, I usually end up with a cable that works smoothly and lasts longer.
Final Thoughts
I see the Serial to USB cable as a simple but essential tool for connecting older serial devices to modern computers. My takeaway is that it can save time, reduce compatibility issues, and make troubleshooting much easier when the right adapter is used. I always recommend checking device requirements and driver support before buying one.
Author Profile
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Older homes taught me to pay attention to the small things people often overlook. I’m based in Cincinnati, Ohio, with a background in construction technology and residential property maintenance, where I spent years around repairs, tools, materials, and everyday household problems.
That experience made me practical about what is worth buying and what is not. In 2026, I started Raulstuckpointing.com to share honest opinions shaped by real use, comparison, research, and everyday needs.
I care about durability, simplicity, fair pricing, and products that remain genuinely useful long after the excitement of buying something new has worn off.
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