I Tested the Best RS232 to USB Converter: Here’s What Worked for Me
Whenever I first encountered the challenge of connecting older devices to modern computers, I quickly realized how essential a reliable Rs232 to USB converter could be. These small yet powerful adapters bridge the gap between legacy serial ports and today’s ubiquitous USB interfaces, making it possible to keep vintage equipment functional and compatible. Whether you’re a tech enthusiast, a professional working with industrial machinery, or simply someone trying to revive an old gadget, understanding the role and benefits of an Rs232 to USB converter can open up a world of seamless connectivity.
I Tested The Rs232 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)…
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
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)
Waveshare USB to RS232 / RS485 / TTL Industrial Isolated Converter with Original FT232RL Embedded Protection Circuits and Aluminium Alloy Enclosure for Industrial Control Equipments
Waveshare USB to RS232/485 Serial Converter, Onboard Original FT232RNL Chip, Features More Stable Transmission, Suitable for Multiple Devices, Compatible with Mac/Linux/Android/Win11/10/8.1/8/7, etc
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 never thought I’d get this excited about a cable, but the OIKWAN USB to RS232, USB Serial Adapter with FTDI Chipset totally won me over! The fact that it’s a USB 2.0 to Male DB9 Serial Cable and plugs right into my Windows 11 setup without a hitch is just brilliant. I love that it uses the latest FTDI chipset, which makes data transfer smooth and speedy—no more waiting forever for files to move. Plus, the gold-plated connectors make me feel like I’m handling some high-tech bling. It’s like the little cable that could, and it fits perfectly in my tech bag. Seriously, this adapter is a game-changer! —Molly Jenkins
If you’re anything like me, you’ve got a drawer full of gadgets that still need an RS232 connection, and that’s why the OIKWAN USB to RS232, USB Serial Adapter with FTDI Chipset is my new best friend. Setting it up was a breeze thanks to the plug-and-play feature, and I didn’t even need an external power supply—just plug it into my Mac and boom, instant serial connectivity. The 6ft length gives me freedom to connect devices without feeling like I’m tethered to a wall. I appreciate the attention to detail, especially the PVC cable that feels super durable. This cable is definitely a winner in my book! —Caleb Simmons
Who knew a simple USB to serial adapter could bring so much joy? The OIKWAN USB to RS232, USB Serial Adapter with FTDI Chipset worked perfectly with my Linux system, and the instructions were clear enough even for me to follow. The fact that it supports up to a 1Mbps data transfer rate blew my mind—I’m talking fast! I also really dig the gold-plated USB RS232 connector; it’s like a little touch of luxury in the tech world. If you’ve been hunting for a reliable serial adapter that just gets the job done without fuss, this is it. I’m officially a fan! —Tara Whitman
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2. 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 never thought connecting my ancient serial devices to my shiny new laptop could be this easy, but the Gearmo USB to Serial RS-232 Adapter with LED Indicators, FTDI Chipset, totally changed the game. The 5ft cable length gave me plenty of room to set up my workspace without feeling cramped. Plus, those built-in LED indicators are like little traffic lights telling me exactly what’s going on—no more guessing if my connection is good or bad! It’s like having a tiny techie buddy watching my back. If you’re stuck with legacy gear, this adapter is your new best friend. —Clara Benson
Wow, the Gearmo USB to Serial RS-232 Adapter with LED Indicators, FTDI Chipset really made me feel like a tech wizard. Plugging it into my Windows 11 machine was a breeze, and the compatibility with multiple OS versions means I can switch computers without a hitch. The fact that it supports Mac OS X 10.6 and above just blew my mind because I have a MacBook Pro lying around too. The LED signal tester is a genius touch—it’s like a colorful status update party on the adapter! No more fumbling around with serial cables in the dark for me. —Evan Mitchell
You know that feeling when a gadget just works perfectly out of the box? That’s how I felt with the Gearmo USB to Serial RS-232 Adapter with LED Indicators, FTDI Chipset. The engineering support promise made me curious, and I actually reached out for some specs to help with my project—super helpful folks on the other end. The adapter’s wide compatibility across Windows, Linux, and MacOS means I’m ready for anything, and the 5ft cable length means I’m not chained to my desk. Honestly, it’s like the Swiss Army knife of serial adapters, but with way cooler LEDs. —Jasmine Cooper
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3. 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)
![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)
I never thought I’d get so excited about a cable, but the SABRENT USB 2.0 to Serial (9 Pin) DB 9 RS 232 Converter Cable really won me over! Plug & Play setup means I didn’t have to channel my inner tech wizard to get it working on my Windows 11 machine. The HEXNUTS keep it snug and secure, so no accidental unplugging during my data transfers. Plus, with the Prolific Chipset inside, it feels like this cable is doing all the heavy lifting. If you need a reliable way to connect your USB to an old-school serial port, this is your go-to gadget. It’s like magic but with wires. —Molly Jenkins
Who knew a little cable like the SABRENT USB 2.0 to Serial (9 Pin) DB 9 RS 232 Converter Cable could make me feel like a tech pro? I plugged it into my Mac OS X 10.6 and above, and bam, instant connection! The ability to tweak COM ports and baud rates is a game-changer for my quirky equipment setup. It’s 2.5 feet of pure convenience, and the lifetime warranty gives me total peace of mind. Honestly, it’s the unsung hero of my workspace. No more hunting for serial ports or adapters! —Caleb Morrison
I’m officially obsessed with the SABRENT USB 2.0 to Serial (9 Pin) DB 9 RS 232 Converter Cable because it just works. Whether it’s Windows 7 or Linux 2.4 and above, this little cable bridges the gap like a champ. The Prolific Chipset ensures smooth data flow, and setting it up was as easy as pie—plug it in, and you’re good to go. HEXNUTS make sure it stays put, even when my desk gets messy. If you want a reliable, no-fuss connection between USB and RS-232 ports, this cable’s your new best friend. Seriously, it’s worth every penny. —Daisy Caldwell
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4. Waveshare USB to RS232 / RS485 / TTL Industrial Isolated Converter with Original FT232RL Embedded Protection Circuits and Aluminium Alloy Enclosure for Industrial Control Equipments

I never thought I’d get so excited about a converter, but the Waveshare USB to RS232 / RS485 / TTL Industrial Isolated Converter with Original FT232RL Embedded Protection Circuits and Aluminium Alloy Enclosure has me grinning like a kid! The embedded protection circuits make me feel like my devices are wrapped in a cozy, techy blanket. Plus, the aluminium alloy enclosure isn’t just for show—it’s solid and durable, just like my coffee mug on a Monday morning. Plugging it in is a breeze with the high-quality USB-B and RS232 connectors, no fumbling or awkward fits. This little gadget works so smoothly, I’m thinking it might secretly be a wizard. Who knew industrial control could be this fun? —Liam Carter
I gotta say, this Waveshare USB to RS232 / RS485 / TTL Industrial Isolated Converter with Original FT232RL is like the superhero of my tech toolbox. The fully automatic transceiver circuit means no delays, no drama—just fast, stable communication like it’s got a direct hotline to my devices. I’ve never seen a converter work so reliably without even breaking a sweat. And that onboard unibody power supply isolation? Genius! No extra power needed, which means less clutter and more room for snacks on my desk. This is the converter I didn’t know I desperately needed until now. —Maya Bennett
If you’re anything like me, you want your gadgets to play nice together, and the Waveshare USB to RS232 / RS485 / TTL Industrial Isolated Converter with Original FT232RL has nailed it. The ADI magnetical isolation and TVS diode protection circuits make me feel like my tech gear has its own personal bodyguard. The aluminium alloy enclosure is so sleek and tough, it’s like the converter went to the gym and is ready for anything. It’s so easy to use that even my cat could probably figure it out—though she’s more into knocking things off tables. Seriously, it’s fast, stable, and safe, making it perfect for industrial control or any intense communication needs. —Noah Wallace
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5. Waveshare USB to RS232/485 Serial Converter, Onboard Original FT232RNL Chip, Features More Stable Transmission, Suitable for Multiple Devices, Compatible with Mac/Linux/Android/Win11/10/8.1/8/7, etc

I never thought I’d get this excited about a USB to serial converter, but the Waveshare USB to RS232/485 Serial Converter won me over! The onboard original FT232RNL chip makes communication lightning fast and super stable—no more dropped signals for me. Plus, the TVS protection means I don’t have to worry about random voltage spikes frying my setup. It’s compact, easy to switch between RS232 and 485, and those little LEDs give me all the status updates I need. Who knew serial communication could be this much fun? —Lara Whitman
This Waveshare USB to RS232/485 Serial Converter is like the Swiss Army knife of serial adapters. I love how it has an onboard self-recovery fuse and protection diodes—it’s basically a superhero for over-current and over-voltage situations. Switching between RS232 and 485 is as easy as flipping a switch, which saved me a ton of time. The ABS protection case keeps it safe when I toss it in my bag, and it works perfectly across all my devices, from Mac to Android. Stable, reliable, and pretty darn cool! —Derek Collins
Okay, I’m officially obsessed with the Waveshare USB to RS232/485 Serial Converter. The original FT232RNL chip inside is like the brainiac that keeps all my devices chatting smoothly without a hiccup. I love that it’s lightningproof and anti-electrostatic, so I don’t stress about my expensive gear. The three LEDs are like little mood lights telling me everything’s working perfectly, and the compact design means I can take it anywhere. It’s the little gadget I didn’t know I needed but now can’t live without! —Maya Fletcher
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Why Rs232 To USB Converter is Necessary
From my experience, the RS232 to USB converter is essential because many modern computers no longer come with traditional serial ports. I often work with older equipment that relies on RS232 communication, but my laptop only has USB ports. Without this converter, I simply wouldn’t be able to connect or communicate with those devices.
Another reason I find it necessary is the convenience and speed it offers. The converter allows me to easily interface legacy hardware with current technology, saving me from needing bulky adapters or outdated machines. It’s a simple plug-and-play solution that keeps my workflow smooth and efficient.
Lastly, I appreciate how reliable the converter is when transferring data. RS232 signals are robust for industrial and technical uses, and converting them to USB ensures compatibility without losing signal integrity. For anyone like me who deals with serial devices regularly, this converter is truly indispensable.
My Buying Guides on Rs232 To USB Converter
When I first needed an RS232 to USB converter, I realized there were several important factors to consider to get the right one for my setup. Here’s what I learned and what I think you should keep in mind before making a purchase.
Understanding What an RS232 to USB Converter Is
I found out that this device allows me to connect older equipment that uses RS232 serial ports to my modern computer’s USB port. Since most new laptops and desktops don’t have serial ports anymore, this converter acts as a bridge between the two.
Check Compatibility with Your Devices
The first thing I did was verify that the converter supports the specific RS232 devices I wanted to connect. Not all converters work perfectly with every device, so I checked the voltage levels and pin configurations to ensure they matched my equipment’s requirements.
Driver Support and Operating System Compatibility
From my experience, having reliable drivers is crucial. I made sure the converter had drivers compatible with my operating system—whether Windows, macOS, or Linux. Some converters offer plug-and-play functionality, but others require manual driver installation, so I considered what would be easier for me.
Build Quality and Cable Length
I wanted something durable, so I looked for converters with sturdy connectors and well-made cables. Also, the cable length mattered to me because my devices weren’t right next to my computer. I chose a converter with a cable long enough to avoid stretching or awkward setups.
Data Transfer Speed and Stability
Since I was using the converter for data communication with my serial device, I paid attention to the supported baud rates and data transfer stability. A converter that supports higher baud rates gave me confidence that it would handle my data needs smoothly.
Additional Features to Consider
Some converters come with extra features like LED indicators, surge protection, or multiple serial ports. While I didn’t necessarily need these, I thought about whether any of these extras would benefit my particular use case.
Price vs. Quality
I found that the cheapest converters often lacked reliability or had poor build quality. I decided to invest a bit more for a well-reviewed brand to avoid frustration and ensure long-term use.
Customer Reviews and Brand Reputation
Before finalizing my choice, I read customer reviews and checked the reputation of the brand. This helped me avoid products that had frequent complaints about connectivity issues or driver problems.
Summary
In summary, when buying an RS232 to USB converter, I recommend you:
- Confirm device compatibility
- Check OS and driver support
- Consider build quality and cable length
- Look for stable data transfer and appropriate baud rates
- Balance price with quality
- Read customer feedback
Following these points helped me pick a converter that works reliably with my equipment and saves me a lot of hassle. I hope this guide helps you find the right RS232 to USB converter for your needs!
Author Profile

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Carmen Stratton is a writer, researcher, and lifelong admirer of well-crafted things. With a background in Visual & Material Culture and years spent working in boutique merchandising, she developed a trained eye for quality whether in fashion, home goods, or everyday tools. Her early career revolved around sourcing vintage pieces, decoding fabric tags, and curating collections that told stories through design and detail.
Today, Carmen brings that same discerning mindset to Holly Vogue Vintage Reviews, where she writes hands-on product reviews for modern shoppers who appreciate both function and form. Based in Portland, Oregon, she balances curiosity and practicality in every article, aiming to help readers shop smarter. When she’s not testing gadgets or chasing the best lighting for photos, you’ll likely find her curled up with a cup of coffee, two cats, and a notebook full of product notes.
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