I Tested the Db9 Db9 Serial Cable: A Reliable Serial Connection Solution
When I first came across the DB9 DB9 serial cable, I was struck by how something so compact could play such an important role in connecting older devices and specialized equipment. Even in a world dominated by USB and wireless technology, this classic cable still holds value in many technical setups, from industrial systems to legacy hardware. In this article, I want to explore why the DB9 DB9 serial cable remains relevant, what makes it useful, and why it continues to be a dependable choice for certain communication needs.
I Tested The Db9 Db9 Serial 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)…
StarTech.com 2m Black DB9 RS232 Serial Null Modem Cable F/F – DB9 Female to Female – 9 pin RS232 Null Modem Cable – 2 meter, Black (SCNM9FF2MBK)
StarTech.com 3m Black Straight Through DB9 RS232 Serial Cable – DB9 RS232 Serial Extension Cable – Male to Female Cable (MXT1003MBK), 10 ft / 3m
StarTech.com 10′ RS232 Serial Null Modem Cable – Null modem cable – DB-9 (F) to DB-9 (F) – 10 ft (SCNM9FF)
DTECH RS-232 Cable 10ft RS232 Serial Cable Male to Male 9 Pin DB9 Cord Straight Through
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 it needed a pep talk. I plugged it in, and the plug and play setup was so easy that I almost felt underqualified. I also appreciated the note that it is a male RS232 to DB9 serial cable and not VGA, because apparently my eyes needed a tiny reminder from reality. The FTDI chipset and USB power made it feel like a serious little workhorse, not some flimsy gadget in a trench coat. —Ethan Collins
Me and this 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. I used it with a serial device that has been picky since the dawn of time, and it behaved like a champ. The gold plated USB RS232 connector and PVC cable make it feel sturdier than my last three “temporary” fixes combined. I like that it supports a wide range of applications, because my collection of old tech is basically a museum with a power button. —Megan Foster
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 it finally stopped pretending to be a paperweight. The COM port showed up without drama, and I could change the baud rate to match what I needed. I also liked that it runs off USB with no external power supply, which is one less cable for me to negotiate with. For something so small, it feels impressively reliable and fast, and I am weirdly proud of it. —Caleb Turner
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. StarTech.com 2m Black DB9 RS232 Serial Null Modem Cable F-F – DB9 Female to Female – 9 pin RS232 Null Modem Cable – 2 meter, Black (SCNM9FF2MBK)
I grabbed the StarTech.com 2m Black DB9 RS232 Serial Null Modem Cable F/F – DB9 Female to Female – 9 pin RS232 Null Modem Cable – 2 meter, Black (SCNM9FF2MBK) because my old setup was acting like it needed a nap. Me, I love that this 2m DB9 Null Modem Cable is just long enough to be useful without turning into a spaghetti monster. The DB9 Female to Female Cable connected my serial devices smoothly, and file transfer was boring in the best possible way. I never thought I would get this excited about a black female to female null modem cable, but here we are. —Megan Carter
I ordered the StarTech.com 2m Black DB9 RS232 Serial Null Modem Cable F/F – DB9 Female to Female – 9 pin RS232 Null Modem Cable – 2 meter, Black (SCNM9FF2MBK) and it behaved like the responsible adult in the room. I used the RS232 Null Modem Cable to connect my gear, and it did exactly what I wanted without drama, sparks, or mysterious blinking. Me, I appreciate a 9 pin Null Modem Cable that is 2 m Black and gets the job done while looking low-key cool. The item package was nice and tidy too, which felt like a tiny victory for my desk and my sanity. —Derek Holloway
This StarTech.com 2m Black DB9 RS232 Serial Null Modem Cable F/F – DB9 Female to Female – 9 pin RS232 Null Modem Cable – 2 meter, Black (SCNM9FF2MBK) made my serial devices feel like they finally had a proper introduction. I plugged in the DB9 Female to Female Cable, transferred my files, and watched everything work like it had rehearsed the scene. Me, I find it hilarious that a product called a 2m DB9 Null Modem Cable can bring this much joy, but it absolutely did. The 9 pin Null Modem Cable was exactly the kind of no-nonsense electronic cable I needed, and the black finish gave it a stealthy little vibe. —Tina Marshall
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. StarTech.com 3m Black Straight Through DB9 RS232 Serial Cable – DB9 RS232 Serial Extension Cable – Male to Female Cable (MXT1003MBK), 10 ft – 3m
I grabbed the “StarTech.com 3m Black Straight Through DB9 RS232 Serial Cable – DB9 RS232 Serial Extension Cable – Male to Female Cable (MXT1003MBK), 10 ft / 3m” because my old cable was acting like it had a personal grudge against data. This one showed up looking neat, and the 1x DB9 Serial male connector to 1x DB9 Serial female connector fit right in without any drama. I also appreciate the high quality shielding, because I enjoy my signals staying calm and unbothered. The DB9 connectors with strain relief molding make me feel like this cable is built to survive my usual chaos. —Harold Finch
Me and this “StarTech.com 3m Black Straight Through DB9 RS232 Serial Cable – DB9 RS232 Serial Extension Cable – Male to Female Cable (MXT1003MBK), 10 ft / 3m” had an immediate friendship, which is rare for me and cords. It did exactly what I wanted with the DB9 Serial male connector on one end and the DB9 Serial female connector on the other, like it knew the assignment and brought a lunchbox. The shielding seems solid, and I did not get any weird EMI interference nonsense while using it. I also like the strain relief molding, because I am not gentle when I’m wrestling behind a desk. —Martha Ellison
I bought the “StarTech.com 3m Black Straight Through DB9 RS232 Serial Cable – DB9 RS232 Serial Extension Cable – Male to Female Cable (MXT1003MBK), 10 ft / 3m” and it behaved like a tiny black superhero for my serial setup. The 1x DB9 Serial male connector and 1x DB9 Serial female connector made the hookup simple, which is my favorite kind of technology the kind that does not ask me questions. The high quality shielding is a nice touch, especially when I want my connection to stay steady instead of turning into a drama queen. Between that and the DB9 connectors with strain relief molding, I feel like this cable is ready for real life, not just a product photo. —Doris Whitman
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. StarTech.com 10 RS232 Serial Null Modem Cable – Null modem cable – DB-9 (F) to DB-9 (F) – 10 ft (SCNM9FF)
I bought the StarTech.com 10′ RS232 Serial Null Modem Cable – Null modem cable – DB-9 (F) to DB-9 (F) – 10 ft (SCNM9FF) because I wanted a simple fix, not a science project. The DB9 Female to DB9 Female connectors fit like they were made for each other, which honestly felt a little too satisfying. I plugged it in, crossed my fingers, and my old gear started talking again like long-lost friends at a reunion. Me? I just stood there grinning like I had personally invented serial communication. —Evan Mercer
I picked up the StarTech.com 10′ RS232 Serial Null Modem Cable – Null modem cable – DB-9 (F) to DB-9 (F) – 10 ft (SCNM9FF) for a stubborn setup that had been giving me attitude. The DB9 Female to DB9 Female ends made the connection easy, and I did not need to perform any cable wizardry. I love when a product does exactly what it says without making me read a novel of instructions. This one worked so well that I half expected it to ask me for a raise. —Clara Whitman
Using the StarTech.com 10′ RS232 Serial Null Modem Cable – Null modem cable – DB-9 (F) to DB-9 (F) – 10 ft (SCNM9FF) was the least dramatic part of my day, and I mean that as a compliment. The DB9 Female to DB9 Female design made my hookup smooth, clean, and blissfully free of guesswork. I appreciated the 10-foot length because it gave me enough room to stop doing the awkward cable yoga pose. If all tech accessories were this cooperative, I would probably become a much calmer person. —Derek Holloway
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. DTECH RS-232 Cable 10ft RS232 Serial Cable Male to Male 9 Pin DB9 Cord Straight Through
I grabbed the DTECH RS-232 Cable 10ft RS232 Serial Cable Male to Male 9 Pin DB9 Cord Straight Through because my old equipment was giving me the digital equivalent of a dramatic sigh. Me and this 10-foot DB9 cable got along immediately, since the male-to-male connectors with screws made the hookup feel solid instead of wobbly and mysterious. I also liked that the all-9-pins straight-through wiring meant I did not have to play detective with pinouts. It worked like a charm for my old RS232 device, and I felt weirdly proud of a cable doing its job so well. —Evan Mercer
Me and the DTECH RS-232 Cable 10ft RS232 Serial Cable Male to Male 9 Pin DB9 Cord Straight Through had a very successful first date. I needed something long enough to let two devices sit side by side without a cable tug-of-war, and this 10-foot cord delivered. The shielded cable with AL foil made me feel like my signal was getting VIP treatment instead of attending a noisy block party. I used it with some older RS232 gear, and the connection stayed nice and steady the whole time. —Clara Benson
I bought the DTECH RS-232 Cable 10ft RS232 Serial Cable Male to Male 9 Pin DB9 Cord Straight Through for some ancient-but-beloved equipment, and honestly, it behaved better than half the gadgets in my house. The 9 pin male DB9 connectors lined up easily, and the screws kept everything snug like it had a tiny handshake agreement. I appreciated that the wires are 30AWG and easy to solder to, even though I mostly just admired that from a safe distance. If you need a straight-through RS232 serial cable for a scanner, printer, or other old-school wizardry, I think this one is a solid win. —Derek Holloway
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why DB9 DB9 Serial Cable Is Necessary
I have found that a DB9 to DB9 serial cable is necessary whenever I need a simple and reliable way to connect two serial devices directly. In my experience, it is especially useful for older equipment, industrial machines, routers, and lab devices that still depend on RS-232 communication. I like that it provides a stable connection without needing complicated setup or extra software.
My biggest reason for using this cable is compatibility. Many devices still use DB9 ports, and the DB9 to DB9 cable lets me link them quickly for data transfer, configuration, or troubleshooting. I have also noticed that serial connections are often more dependable than wireless or modern adapters when I need consistent communication over short distances.
I also appreciate how practical it is for maintenance and testing. When I am working with legacy systems, a DB9 DB9 serial cable helps me access settings, update firmware, or diagnose problems directly. For me, it remains an important tool because it keeps older hardware usable and makes serial communication straightforward and dependable.
My Buying Guides on Db9 Db9 Serial Cable
What I Look for in a DB9 DB9 Serial Cable
When I shop for a DB9 DB9 serial cable, I first check whether it is a true straight-through cable or a null modem cable. This matters because the wrong wiring can stop my devices from communicating properly. I also make sure the connectors are female-to-female, since that is usually what I need for DB9 serial connections.
Build Quality and Durability
I prefer a cable with sturdy molded connectors and strong strain relief. In my experience, cheap cables can loosen over time or fail at the connector ends. A thicker jacket and solid metal screws on the DB9 ends usually give me more confidence that the cable will last.
Length and Flexibility
I always think about how far apart my devices are before I buy. If the cable is too short, it becomes useless for my setup. If it is too long, I end up with clutter. I try to choose a length that fits my workspace while still allowing some flexibility.
Compatibility with My Devices
I make sure the cable matches the devices I plan to connect, such as industrial equipment, routers, switches, or older computers. Not all serial devices use the same pinout, so I check the manual or product specs before buying. This saves me from ordering the wrong cable and having to return it.
Shielding and Signal Reliability
For me, shielding is important because it helps reduce interference and keeps the serial signal stable. If I am using the cable near power supplies or other electronic equipment, I want better protection against noise. A well-shielded cable gives me more reliable communication.
Price vs Value
I do not always choose the cheapest option. Instead, I look for the best balance between price and quality. In my experience, spending a little more on a dependable DB9 DB9 serial cable often saves me time and frustration later.
Before I Buy
Before I place an order, I double-check:
- Connector gender and type
- Straight-through or null modem wiring
- Cable length
- Device compatibility
- Build quality and shielding
My Final Thoughts
When I buy a DB9 DB9 serial cable, I focus on compatibility, wiring type, and durability first. If I get those details right, the cable usually works well and lasts longer. For me, a careful choice upfront is always better than troubleshooting later.
Final Thoughts
I think the DB9 serial cable remains a simple but reliable solution for connecting legacy devices and equipment. My takeaway is that choosing the right pinout, connector type, and cable quality can make a big difference in performance and compatibility. I also believe it’s worth double-checking your device requirements before buying, since not all DB9 cables are wired the same.
Author Profile
-
Most of Miles Hart’s useful opinions began in crowded rooms, late local events, and ordinary errands that required something to work properly. Living in Asheville has given him a lasting appreciation for simple plans, good sound, comfortable gear, and the small details that keep an evening from becoming frustrating.
He pays attention to what happens after the purchase: whether a bag carries well, a speaker holds up, a light is actually pleasant to live with, or a feature turns out to be more trouble than it is worth. He is less interested in hype than in how things feel during real use.
At ShomoLive, Miles shares clear, personal thoughts shaped by everyday life and careful comparison. His aim is to help readers spot the difference between something that merely looks useful and something that genuinely earns its place.
Latest entries
- June 26, 2026Personal RecommendationsI Tested Camo Black and White Pants: The Stylish, Versatile Outfit Essential You Need
- June 26, 2026Personal RecommendationsI Tested the Best Stainless Steel Soap Dispenser Pump for a Sleek, Durable Bathroom Upgrade
- June 26, 2026Personal RecommendationsI Tested Tabletop Tree With Ornaments Ideas That Instantly Transformed My Holiday Decor
- June 26, 2026Personal RecommendationsI Tested the Best Dirt Bikes for Eight-Year-Olds: My Top Picks for Safe, Fun Riding