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Premium USB 2.0 to RS232 Serial DB9 Adapter Cable 6 Feet - Supports Windows 11, 10, 8, 7, Vista, XP, 2000, 98, Linux and Mac - Built with FTDI Chipset and Thumbscrews

4.5 4.5 out of 5 stars 624 ratings
$15.99
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6 ft
Thumbscrews
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Purchase options and add-ons

Compatible Devices RS232 Serial Devices
Connector Type Db9 Serial Connector
Color Black
Item Dimensions LxWxH 5.5 x 1.5 x 9 inches
Brand Tera Grand

About this item

  • OS SUPPORT - Supports Windows 11, 10, 8, 7, Vista, 2000, XP, 98, Apple MAC OS8 or higher, Linux 2.4.0 and later, OpenBSD 2.9 and later & FreeBSD 4.7 and later. This cable is NOT used for computer VGA monitors which use a HDB15 (15-pin) VGA connector.
  • USB2 TO RS232 - Installed as a standard Windows COM ports, Full RS-232 modem control signals, RS-232 data signals; TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI, GND
  • CONNECT SERIAL DB9 DEVICES - Provides instant connectivity with modems, ISDN terminal adapter, PDA, bar code scanner, label printer, and devices with DB9 SERIAL ports. This cable is NOT used for VGA monitors which use a HDB15 (15-pin) VGA connector.
  • FTDI CHIPSET - Built with FTDI chipset, Powered by USB port, Download the latest driver from the Tera Grand website. This cable is NOT used for VGA monitors which use a HDB15 (15-pin) VGA connector.
  • IMPORTANT - This cable is NOT used for computer VGA monitors which use a HDB15 (15-pin) VGA connector. This cable is used for RS232 serial devices. Please double check if your RS232 Serial device needs a cable with Male Thumbscrews or Female Hex Jack Nuts. These connector styles are not interchangeable.

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Price$15.99$32.46$8.98$9.99$15.99-29% $11.99
List: $16.99
Delivery
Get it as soon as Thursday, May 2
Get it as soon as Thursday, May 2
Get it as soon as Thursday, May 2
Get it as soon as Thursday, May 2
Get it as soon as Thursday, May 2
Get it as soon as Thursday, May 2
Customer Ratings
4.54.5 out of 5 stars624
4.74.7 out of 5 stars1,831
4.14.1 out of 5 stars38
4.34.3 out of 5 stars7,249
4.54.5 out of 5 stars1,218
4.54.5 out of 5 stars2,615
Quality of material
4.8
4.7
—
4.5
5.0
4.3
Easy to install
4.7
4.9
—
4.2
4.7
4.3
Value for money
4.6
4.6
4.4
4.4
—
4.1
Easy to use
4.8
4.7
4.2
—
—
4.5
Tech Support
3.9
4.9
—
3.8
—
3.8
Sold By
VENUS ONE
Amazon.com
DTECH Co.,Ltd
BenfeiDirect
Vtop Online Shop
CableCreation
connector type
Db9 Serial Connector
Serial/USB
DB9
DB9
Usb 2.0, Rs-232
USB Type A
number of ports
1
1
1
0
1
1
current rating
—
256 amps
3 amps
1 amps
1 amps
1 amps
warranty
—
Lifetime
Limited
Limited
Limited
—

From the manufacturer

USB 2.0 to RS232 Serial DB9 Adapter Win 10 FTDI

Universal RS-232 Compatibility and Easy Connectivity

Supported OS

USB-A to RS232 Serial DB9

USB-A to RS232 Serial DB9

WIDE COMPATIBILITY:

Connect a device with a DB9 RS232 Serial port to the USB-A port on your computer or laptop. Supports RS232 Serial DB9 Interface and up to 1Mbps data transfer rate. Installed as a standard Windows COM port, Full RS232 modem control signals, RS232 data signals; TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI, GND.

CONNECT RS232 SERIAL DB9 DEVICES:

Provides instant connectivity with modems, ISDN terminal adapter, PDA, bar code scanner, label printer, and devices with DB9 RS232 Serial ports. Please double-check if your RS232 Serial device needs a cable with Male Thumbscrews or Female Hex Nuts. These connector styles are not interchangeable.

FTDI CHIPSET and OS SUPPORT:

Built with FTDI chipset for wide stability and compatibility with Windows 11/ 10/ 8/ 7/ Vista/ XP/ 2000, Linux, and Mac OS. Supports remote wake-up and power management. Powered by USB-C port, no external power adapter is required. Download the latest driver from the Tera Grand website.

Product information

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Tera

Tera Grand - Premium USB 2.0 to RS232 Serial DB9 Adapter Cable 6 Feet - Supports Windows 11, 10, 8, 7, Vista, XP, 2000, 98, Linux and Mac - Built with FTDI Chipset and Thumbscrews

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Product guides and documents

Installation Manual (PDF)

Product Description

Tera Grand - Premium USB 2.0 to RS232 Serial DB9 Adapter Cable 6 Feet - Supports Windows 11, 10, 8, 7, Vista, XP, 2000, 98, Linux, and Mac - Built with FTDI Chipset and Thumbscrews. This Cable is NOT Used for VGA Monitor.

Customer reviews

4.5 out of 5 stars
4.5 out of 5
624 global ratings

Customers say

Customers like the performance, quality and ease of installation of the electronic cable. For example, they mention it works well, is well built and easy to install. Some appreciate the value for money and the correct drivers that come with it.

AI-generated from the text of customer reviews

121 customers mention109 positive12 negative

Customers are satisfied with the performance of the cable. For example, they mention it works well, it's well made, and inexpensive. Some say that the cable works with no need for drivers. That said, most are happy with the quality and performance of this product.

"...This cable worked perfectly. Well made and inexpensive, with fast shipping." Read more

"...They handle the max baud rate of the radio rigs fine, work fine with Windows 11 and have a non-weird chip set - no driver worries!..." Read more

"...Electrically this works very well, just don't overlook the physical limitations - like I did." Read more

"...For me it works fine with no need for drivers in OSX High Sierra using the 3rd party Serial app...." Read more

49 customers mention43 positive6 negative

Customers like the quality of the electronic cable. They mention it's well built, reliable, and sturdy. Some say the FTDI chip is more robust than Prolific. Overall, most are satisfied with the product's quality and performance.

"...This cable worked perfectly. Well made and inexpensive, with fast shipping." Read more

"...It works really great and is very reliable and haven’t had any communication issues between the server and the UPS. I recommend it." Read more

"...Good product. I am assuming those reviews that say the cable does not work did not load drivers correctly...." Read more

"...And of course the FTDI chip is more robust than Prolific. This is the ideal usb-serial adapter." Read more

36 customers mention36 positive0 negative

Customers find the installation of the electronic cable to be easy. They mention that it plugs and plays on a Mac, and installs automatically without the need to download drivers. Some say that the cable works without any installation of software and is instantly recognized by their computer.

"...Dead simple to use - true plug and play...." Read more

"...It was instantly recognized by my computer and drivers were automatically downloaded from Windows Update...." Read more

"...I had no hassle getting it to work and will definitely try Tera Grand products again." Read more

"Works great and easy to use, exactly what I need too." Read more

24 customers mention24 positive0 negative

Customers appreciate the value of the electronic cable. They say it's well worth the price, works great, and is not cheap. Some say it works great as a replacement for a similar cable that Microsoft changes made obsolete.

"...This cable worked perfectly. Well made and inexpensive, with fast shipping." Read more

"...Definitely less expensive." Read more

"It's a very useful product. I'm a bit curious if I can use FTDI's programming API to simulate a 56k modem on a computer." Read more

"...Cost effective and does the job properly." Read more

22 customers mention20 positive2 negative

Customers like the drivers of the electronic cable. They mention that it works with Mac OS X, and does not need to install any drivers. Some say that the drivers were automatically downloaded from Windows Update and installed automatically.

"...fine, work fine with Windows 11 and have a non-weird chip set - no driver worries! Dead simple to use - true plug and play...." Read more

"...was instantly recognized by my computer and drivers were automatically downloaded from Windows Update...." Read more

"...But after configuring Flrig, the software immediately communicated with the radio. No other problems." Read more

"...This cable comes with a mini-CD with drivers, but Windows 10 installed it automatically, before I could even load the CD...." Read more

7 customers mention4 positive3 negative

Customers are mixed about the connectivity of the electronic cable. Some mention that it has good connectivity and no connection issues, while others say that it would not communicate with their CMM machine and would just lose connection.

"Worked great after driver install. No problem communicating thru software...." Read more

"My computer was not communicating with my plotter. Plotter would not cut out designs without going haywire with its cutting...." Read more

"...Also works on new MacBook Pro. No trouble at all. Good length. Easy connection." Read more

"...had two of these and they both failed after 6 months and would just lose connection. They are just not dependable for long term use." Read more

FTDI. Hex nuts. Perfect.
5 Stars
FTDI. Hex nuts. Perfect.
FTDI chip, and nuts instead of screws, which is more correct for a DTE device like this (ie: same as a legacy port on the back of a pc). Means you can screw a modem or null-modem cable to the adapter and make a clean cable that doesn't fall apart. And of course the FTDI chip is more robust than Prolific. This is the ideal usb-serial adapter.
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Top reviews from the United States

Sean Flannery
5.0 out of 5 stars Quality Old School VGA Cable
Reviewed in the United States on February 23, 2024
Size: 6 ftStyle: ThumbscrewsVerified Purchase
Needed an old school 9 pin vga cable to add in an older vga monitor. This cable worked perfectly. Well made and inexpensive, with fast shipping.
Helpful
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Serpico16
5.0 out of 5 stars Works excellent.
Reviewed in the United States on May 14, 2023
Size: 10 ftStyle: ThumbscrewsVerified Purchase
Bought a couple of these cables for my boss to use at work on his old Windows XP system.
We use them to communicate with a few of our vinyl plotters (Gerber) and they work flawlessly.

There was 1 small problem with the driver though, they require that you download it. However, the ones they have are not compatible with XP, so I had to find an older version of the driver. It did take a little bit of time to track one down.

Drivers for Windows 7, 8,10 etc. are easily obtainable.

These work as good as the cards you would need to buy for the newer systems, as they don't come with RS232 Serial Ports these days. so these cables are probably the better investment.

Definitely less expensive.
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etatmirtna
5.0 out of 5 stars RS232 without headaches or plug in cards!
Reviewed in the United States on February 28, 2023
Size: 6 ftStyle: ThumbscrewsVerified Purchase
These are great. I use them to run my ham radio rigs via the PC. They handle the max baud rate of the radio rigs fine, work fine with Windows 11 and have a non-weird chip set - no driver worries! Dead simple to use - true plug and play. The only caveat is that all of my ham radio rigs all have male serial port plugs on them and this adapter has a male plug. This necessitates a straight through gender changer, so I keep some of those on hand, as I've never found these USB to Serial Port adapters with the female plug. Otherwise, these are perfect!!!
One person found this helpful
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Pano
4.0 out of 5 stars OK - 4 stars
Reviewed in the United States on June 23, 2019
Size: 3 ftStyle: Hex Jack NutsVerified Purchase
I wanted to give this thing 3 stars, but that would not be fair. Mostly that has to do with my frustration from the physical format of thing - which is clear in the photo that I did not pay attention to.

1) It's short. 3 feet is not enough for most uses, be aware of that
2) Most frustrating. The DB9 end has female screw holes, not male screws. And they are not removable. Yes, just like in the photo. But this means I could not connect it to any serial port on any piece of gear I have. Why would you make it that way?? I had to buy a serial extension cable with male fasteners on each end just to use this.

On the bright side, it needed no installation under Windows 10 and seems to work like a charm. There is a tiny driver CD_ROM what comes with it, I did not need it.

Electrically this works very well, just don't overlook the physical limitations - like I did.
One person found this helpful
Helpful
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Nate
5.0 out of 5 stars Always been solid
Reviewed in the United States on April 5, 2024
Size: 6 ftStyle: Hex Jack NutsVerified Purchase
This cable has always been a great choice for what I use it for. I have recommended it to many in the same space, all with similar results.
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Jeff
5.0 out of 5 stars All the signal lines are functional and it's setup in DTE mode.
Reviewed in the United States on August 23, 2023
Size: 6 ftStyle: ThumbscrewsVerified Purchase
It's a very useful product. I'm a bit curious if I can use FTDI's programming API to simulate a 56k modem on a computer.
Helpful
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Jern
5.0 out of 5 stars It’s perfect, but there’s stuff you should know
Reviewed in the United States on September 4, 2019
Size: 6 ftStyle: ThumbscrewsVerified Purchase
For a serial connection to a headless server, JBOD, etc. this is great. You just have to know what you are getting into:

For me it works fine with no need for drivers in OSX High Sierra using the 3rd party Serial app.

The play is to get one of these and then adapters for various use cases. Some use RJ11 for serial, some RJ45, and the pin outs are NOT universal. There’s no one size fits all! So, it’s critical to be aware of the required pin out before getting the second piece of the puzzle. If you don’t know what that is it might be wise to get one of the reconfigurable serial plugs that are plentiful on amazon.

In my case with a couple of different desired connections and infrequent use I thought the two piece solution with adapters would be best so I could mix and match.
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Jeffrey D.
5.0 out of 5 stars Works with Windows 11
Reviewed in the United States on February 7, 2022
Size: 3 ftStyle: ThumbscrewsVerified Purchase
Used the cable to connect an old external serial modem to my Windows 11 desktop USB port. It was instantly recognized by my computer and drivers were automatically downloaded from Windows Update. I did not need to use the enclosed driver disk. The modem is working well and I can now send out the occasional fax when I need to.
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Top reviews from other countries

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Real
5.0 out of 5 stars Five Stars
Reviewed in Canada on February 22, 2018
Size: 6 ftStyle: ThumbscrewsVerified Purchase
Received in time. Works perfectly. Thank you
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Cliente Amazon
4.0 out of 5 stars Solo le falla un adaptador hembra-hembra
Reviewed in Spain on December 12, 2016
Size: 6 ftStyle: ThumbscrewsVerified Purchase
Si te encuentras con el caso de que sea un puerto serie macho, tienes un problema. Añadirle uno no le costaria a la marca tan apenas nada, y evitaría disgustos, solo por eso no le doy las 5 estrellas, por lo demás, funciona como se espera.
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Amazon Customer
1.0 out of 5 stars Dissapointed with non functional device
Reviewed in India on March 10, 2017
Size: 6 ftStyle: ThumbscrewsVerified Purchase
Not functional. Loaded latest driver fron net. When connecting to laptop, pc responds that usb device malfunctioned. In uiversal serial bus controller under Device properties, it shows unknown device. Tried alloptions under document.
Wanted to have stable usb to serial convertor against Cadyce Ca-US9 and i paid thrice the cost for this Tera Grand considering FTDI chipset is more stable than Prolific chipset
I am very much dissapointed with this product.
I tried again and again three days and i tried other laptops also
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Tony Monsua
4.0 out of 5 stars Excelente compatibilidad
Reviewed in Mexico on August 7, 2015
Size: 6 ftStyle: Hex Jack NutsVerified Purchase
Éste no es un simple cable, contiene un chip que lo hace compatible con los mayores sistemas operativos. Una opción segura y barata. Incluye drivers.
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