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Quick tech specs
  • Connect devices with a 9-pin serial port such as switches/ routers/ barcode scanners and network storage devices to the USB Type-A port on your computer or laptop
  • Detachable 3-foot USB cable included
  • Works with Windows (up to 10) and Mac OS X (up to and including 10.14)
  • 3-Year Tripp Lite Warranty
  • Supports data transfer speeds up to 230 Kbps
  • No external power source required
  • USB to RS232 Converter/ USB to Serial Cable/ USB to Serial Converter/ USB Adapter
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Looking for a way to connect your serial devices to a USB port on your PC? The Keyspan "High Speed" USB Serial Adapter is a simple, inexpensive, and reliable way to make this connection.



The Adapter is ideal for use with modems, digital cameras, ISDN terminal adapters, graphics tablets, PDAs, bar code scanners, label printers and other serial devices which require an RS-232 connection.



This "High Speed" USB Serial Adapter supports data rates up to 230 Kbps---twice the speed of a standard PC serial port. It is 100% USB compliant and features simple "Plug and Play" installation (no IRQs). Ideal for laptops (it weighs just 2 oz.), the Adapter draws its power from the USB connection so no power adapter is required.



Highlights

- Plugs into a USB port on a Windows or Macintosh computer

- Provides one RS-232 male DB9 port for direct connection to serial devices

- Supports data rates up to 230 Kbps

- Draws its power from the USB connection -- a power adapter is not required

- Easy to carry -- weighs just 2 ounces!
Availability: 26 units In Stock

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Tripp Lite Keyspan High Speed USB to Serial Adapter 3ft USB Cable TAA
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Tripp Lite Keyspan High Speed USB to Serial Adapter 3ft USB Cable TAA is rated 4.70 out of 5 by 95.
Rated 5 out of 5 by from Great product This product gives me the flexibility to attach older equipment when required.
Date published: 2022-02-20T00:00:00-05:00
Rated 5 out of 5 by from Great Product I havent had any problems with this at all and it really helps me when im in a pinch
Date published: 2022-02-22T00:00:00-05:00
Rated 5 out of 5 by from I would buy this product again Just received and installed. Came with some great reviews.
Date published: 2021-08-05T00:00:00-04:00
Rated 5 out of 5 by from Works great Saved the day
Date published: 2021-08-12T00:00:00-04:00
Rated 5 out of 5 by from This product works well I am using this product to connect a message board to our windows 10 machine. It works well, and has not caused us any issues.
Date published: 2021-10-12T00:00:00-04:00
Rated 5 out of 5 by from I'll be using these Replacing a lot of others with these.
Date published: 2021-10-12T00:00:00-04:00
Rated 5 out of 5 by from Good enough for Lionel, good enough for me! I needed this adapter to download an update to the software on my Lionel 990 Cab 2 Control. This is the unit that Lionel recommended and if it is good enough for my favorite model railroad company, it is good enough for me! It was easy to get the necessary drivers on the TrippLite website. Now I am "back on track"! Thanks!
Date published: 2022-02-03T00:00:00-05:00
Rated 5 out of 5 by from Adapter as a tool Very good tool for engineers who has. laptop with USB port only
Date published: 2022-01-31T00:00:00-05:00
Rated 5 out of 5 by from Very effective I am using this product on a worm computer at work.
Date published: 2021-10-07T00:00:00-04:00
Rated 5 out of 5 by from I would recommend this product. I used it for my OBD2 Scan tool and worked the 1st time.
Date published: 2021-09-13T00:00:00-04:00
Rated 5 out of 5 by from I would buy this product again if needed. Helped me reach my goal of server console connection.
Date published: 2020-10-19T00:00:00-04:00
Rated 5 out of 5 by from WoW Top product!
Date published: 2021-01-18T00:00:00-05:00
Rated 5 out of 5 by from Works with Meade's ETX90-EC It worked well with downloading the firmware update for my Meade ETX90-EC telescope from star patch and use with Meade's Autostart Suite and ASCOM software.
Date published: 2020-10-01T00:00:00-04:00
Rated 5 out of 5 by from Good quality product, great value. I use this product for Laptop to PLC connectivity. It's a must have in my field due to serial ports being phased out on modern computers.
Date published: 2020-02-08T00:00:00-05:00
Rated 5 out of 5 by from Reliable and consistant Service This serial to USB adapter cable was bought as an interface between my laptop and controller on my model train layout. It was a model recommended by the manufacturer for this use. It works flawlessly and consistently. It is a little more costly comparing it some other manufacturer's models but in my opinion was worth the extra cost.
Date published: 2020-02-27T00:00:00-05:00
Rated 5 out of 5 by from Quick and Easy Start Up1 Adapter works exactly as needed. Setup was easy and quick. The green LED is a great feature as well. Highly recommend this product.
Date published: 2020-03-09T00:00:00-04:00
Rated 5 out of 5 by from Nice work with Windows 10 Not so many serial converters works with Win10 this guy plug and play. Done. Highly recommended
Date published: 2020-06-10T00:00:00-04:00
Rated 5 out of 5 by from I would buy this again and would encourage other to do so Used USB serial adapter to connect AED to computer to find problems with AED
Date published: 2020-06-19T00:00:00-04:00
Rated 5 out of 5 by from This Product Is Flawless IT and Security applications
Date published: 2020-02-07T00:00:00-05:00
Rated 5 out of 5 by from The product is awesome I use this product for diagnosis of radio communication equipment. I have used others, but they were not as fast (data), nor did they have any type of indicator LED
Date published: 2020-02-28T00:00:00-05:00
Rated 5 out of 5 by from Great value, sturdy Easy to initialize, sturdy product that came highly recommended.
Date published: 2020-01-26T00:00:00-05:00
Rated 5 out of 5 by from Recommended by my company I use this for equipment that doesn't have a parallel port.
Date published: 2020-01-18T00:00:00-05:00
Rated 5 out of 5 by from excellent product Needed the connection from pin to usb without a headache and this product performed perfectly.
Date published: 2020-02-10T00:00:00-05:00
Rated 5 out of 5 by from I like that it just works with little effort. most pc's and laptops no longer have serial adapters but many pieces of equipment still need a serial connection to configure them. the Keyspan USB Serial Adapter is just what I need to get this done.
Date published: 2020-01-22T00:00:00-05:00
Rated 5 out of 5 by from This flawless device worked on first attempt I use this product in an analytical laboratory to connect to my high end mini rotary viscometer. I am very happy with the flawless connection to my PC.
Date published: 2020-01-13T00:00:00-05:00
Rated 5 out of 5 by from Most compatible converter I've found High quality chip is much more compatible than Chinese manufactured emulators
Date published: 2020-01-18T00:00:00-05:00
Rated 5 out of 5 by from Worked great between Win10 laptop and UPS Required USB->Serial adapter for upgrade laptop to communicate with UPSes, switches, and other devices. This adapter worked like a charm enabling me to upgrade the firmware on my UPSes.
Date published: 2020-12-09T00:00:00-05:00
Rated 5 out of 5 by from null With laptops these days not coming with a physical serial port (understandable as they get thinner and thinner) a USB to serial adapter is needed. This adapter works pretty well. The only thing that is sometimes annoying is having to look up which com port it was issued in device manager before being able to use it with PuTTY.
Date published: 2013-05-17T00:00:00-04:00
Rated 5 out of 5 by from null The plug and play driver for this causes BSOD's on just about every computer i tried to use it with. Not sure if TrippLite ever got around to releasing a functional driver for this, but this is not ideal for recovery/service hardware if you have to chase down a driver.
Date published: 2013-11-19T00:00:00-05:00
Rated 5 out of 5 by from null If you configure network gear and you are using a somewhat slimmed-down laptop/ultrabook, then you absolutely need one of these. If you have a USB port, you can plug this in and use something like Putty or TeraTerm to connect to your network devices for serial configuration. An absolute must-have for any network admin worth his salt.
Date published: 2014-09-11T00:00:00-04:00
Rated 5 out of 5 by from null A solid product for devices w/o an on board serial port. While not quite as convenient as having one built in, serial ports are becoming much less common on laptops.
Date published: 2014-07-29T00:00:00-04:00
Rated 5 out of 5 by from Best adapter for TECH2 I used this to plug my Tech2 to my laptop. Works like a charm.
Date published: 2019-12-21T00:00:00-05:00
Rated 5 out of 5 by from Best usb to serial adapter CSG software uses serial ports for Point of Sale. The USA 19HS is by far the best adapter for this purpose. Others using the Prolific chipset don't work or are very slow.
Date published: 2020-01-06T00:00:00-05:00
Rated 5 out of 5 by from One of the most reliable USB to Serial adapters we've seen... I buy these for our techs 5-10 at a time. We've tried a few other USB to Serial adapters, all of which we had issues with. Not the smallest, but these have been rock solid, work every time. The software makes it easy for the user to see what Com port the device is using. The connector is a USB A connector held in by friction, and won't take too much cable weight, but if not put under strain stays in fine - if you swing it around a server room a lot you could add heat shrink, cable ties, or a rubber band to make sure it stays in tight. We've had fewer issues supporting our techs with these than any other adapter. We have over 100 mobile techs around the country and world using them to program routers, or load firmware in various types of devices...
Date published: 2012-10-25T00:00:00-04:00
Rated 5 out of 5 by from Great USB to serial converter. Just plug and go!! Others I have purchased and caused my PC to blue screen while using. The Keyspan never has. Works great
Date published: 2019-03-06T00:00:00-05:00
Rated 5 out of 5 by from Easy to use, great software interface I use this adaptor for interfacing with several devices, such as a range of servo drives, which don't interface with other adaptors easily. This is very easy to set up, the software allows me to change the ports quickly and easily, and it works with everything I need it to.
Date published: 2012-10-29T00:00:00-04:00
Rated 5 out of 5 by from Great product, met all my expectations Not much to say, except worked perfectly and exactly as advertised.
Date published: 2017-01-01T00:00:00-05:00
Rated 5 out of 5 by from Best USB / Serial Adapter Out There Contrary to other posted comments, this device does work with El Capitan. I have two that are on two different computers (an iMac and a MacBook Pro) that receive daily use. About to purchase a third for a relative to use on a Mac Mini. I've deployed these on several Windows systems too. Absolutely 100% reliable and works without a hitch on both Mac OS X and Windows.
Date published: 2016-05-24T00:00:00-04:00
Rated 5 out of 5 by from my search is over yea !! after searching everywhere for an adapter for my HIPRO box it was recommended to try this one it has worked flawlessly for me and I travel with it frequently it has never given me any problems saved my business lots of $$$$$$
Date published: 2012-10-29T00:00:00-04:00
Rated 5 out of 5 by from Nice product overall! Company laptops no longer have serial ports. This is a must have in my daily tasks.
Date published: 2019-06-26T00:00:00-04:00
Rated 5 out of 5 by from Unit no longer functions The driver which I tried to updat from your site will not download properly on my laptop. It downloads however it does not load when i open the application. I selected the Windows 7 Beta driver for my USA-19HS interface unit. My laptop does not recognize the unit when i plug it in. The power on indicator lamp (LED) does not come on.
Date published: 2012-03-31T00:00:00-04:00
Rated 5 out of 5 by from works good Plug it in and it works
Date published: 2018-10-08T00:00:00-04:00
Rated 5 out of 5 by from It doesn't harvest bee honey But it sure works awesome for connecting to all types of serial devices I have!
Date published: 2013-01-15T00:00:00-05:00
Rated 5 out of 5 by from Gets the job done! No doubt the best and fastest serial adapter I have used before. The size and quality of how it is made seems conducive for much usage and a long life!
Date published: 2019-02-17T00:00:00-05:00
Rated 5 out of 5 by from Look out, OS X (El Captain) not supported... I've used this product for years, it's been great until now. I've called support and they do not have an eta if at all to continue support for OS X.
Date published: 2015-10-08T00:00:00-04:00
Rated 5 out of 5 by from This product works! I used this product mainly configuring the initial setup for networking equipment on my laptop. I installed the driver on both Windows XP, and 7 without any issues. I highly recommend this product to anyone.
Date published: 2013-11-13T00:00:00-05:00
Rated 5 out of 5 by from Think about redesigning the case. Works great. The only thing I have problems with is with the rounded end of the actual case doesn't allow it to make good contact and kept vibrating out. I took a file and filed the end of the plastic case flat and have not had a problem since then.
Date published: 2015-03-19T00:00:00-04:00
Rated 5 out of 5 by from Look no further I have used many USB-serial adapters over the years, and this Keyspan product is by far the best. It is the most reliable adapter I have used. I also like the software that comes with it, which allows you to actually see the data that is being transferred through the serial port.
Date published: 2013-03-08T00:00:00-05:00
Rated 5 out of 5 by from Need OS X Lion support This is a great product but we really need that new driver for support under OS X Lion. I have a number of people who are holding off on purchasing the 19HS until then. The device is very reliable and performs well. Nice multi-platform support overall.
Date published: 2011-08-20T00:00:00-04:00
Rated 5 out of 5 by from AV Industry must have A lot of legacy and even current AV equipment still uses serial cable communication. I have a MacBook Pro running Yosemite, with Windows 8.1 running in Parallels. MOST of the AV configuration software is Windows only. This device allows my Virtual Windows PC to talk to an external serial device with this adaptor as if it were all native on it's own machine. Fantastic!
Date published: 2014-10-02T00:00:00-04:00
Rated 5 out of 5 by from Communicates Successfully Every Time I have hundreds of clients who have equipment with which I occasionally I have to communicate. I use an Apple laptop with the latest OS. Because the client's devices use only PC Windows, I use Parallels to convert to the Windows platform. Then I use the Keyspan serial adapter and a special modem to get the signal onto the phone lines. The Keyspan works every time.
Date published: 2015-02-12T00:00:00-05:00
Rated 5 out of 5 by from The Best USB Serial Adapter on the Market! Works flawlessly in an industrial automation setting. I just outfitted the entire crew with new ones.
Date published: 2019-06-28T00:00:00-04:00
Rated 5 out of 5 by from Rock solid compatablity. I use the 19HS and the 49WG (4 port) with my ham radio gear. I have never had any type of issue where the software did not recognize the adapter as a native serial port. I went through about a half dozen other brands giving me some sort of problem before I found this adapter. The software is also in a class of it's own. I will not buy nor recommend anything else.
Date published: 2013-04-27T00:00:00-04:00
Rated 5 out of 5 by from Works reliably I've used other USB -> Serial adapters, but I never have to wonder whether my Keyspan will work. This is the second one I've owned, since a customer of ours wanted the first one. I had no problem recommending the Keyspan for his application. I keep one in my computer bag.
Date published: 2011-12-08T00:00:00-05:00
Rated 5 out of 5 by from Great buy. Fast, easy and that's what I want.
Date published: 2016-11-22T00:00:00-05:00
Rated 5 out of 5 by from It works I bought this product so I could download info from the internet to my car diagnostic device. I looked at a lot of them but only Tripp Lite 19HS fit the bill. When I received it I plugged right to my computer and it did the job.
Date published: 2014-10-14T00:00:00-04:00
Rated 5 out of 5 by from This product did what know other USB to Serial Adapter could do Hi I used this product to connect my weather station to my iMac computer and it has done what 3 others could not do I would recommend this product to all my friends It does the job! thanks Tripp*Lite USA-19HS
Date published: 2013-09-06T00:00:00-04:00
Rated 5 out of 5 by from Extremely valuable I bought this adapter to use a serial port on my laptop, for use with my weather station with my laptop. It functioned perfectly and allowed me to provide weather information. If your computer has a USB port but lacks an RS232 port then this is for you!
Date published: 2013-09-05T00:00:00-04:00
Rated 5 out of 5 by from Works great with Cisco Switches I use it to communicate to Cisco switches and it works great!
Date published: 2011-12-08T00:00:00-05:00
Rated 5 out of 5 by from It Just Works. VERY Reliable. I've been using one of these for over 10 years on Win-XP, and it works every time, all the time. If you need to add RS-232 to a machine with only USB, you gotta get one of these.
Date published: 2015-07-06T00:00:00-04:00
Rated 5 out of 5 by from Great serial to USB adapters I have tried other adapters,but the 19HS is the one for me.My application, a Ham radio connection to a computer connection,works great with no problems.
Date published: 2012-10-29T00:00:00-04:00
Rated 5 out of 5 by from Windows 7 query I looked through the list of drivers for the USA-19HS and cant see one specifically for Windows 7. Which driver do you recommend for Windows 7 ?
Date published: 2014-04-09T00:00:00-04:00
Rated 5 out of 5 by from Serial adaptor work on cisco equippment
Date published: 2018-12-11T00:00:00-05:00
Rated 5 out of 5 by from Super Compatible I bought many USB to Serial. I know this is a bit expensive. But by far the best USB to Serial. A must buy for latest laptops which don't have serial port.
Date published: 2012-08-14T00:00:00-04:00
Rated 5 out of 5 by from This USB to DB9 Adapter Works Great w/ Fire Panels If you are working with a Gamewell-FCI panel, I recommend purchasing this product as it works great when downloading your HyperTerminal reports and/or downloading programs to the panel. This is also recommended by Gamewell-FCI tech support and I can see why.
Date published: 2012-11-16T00:00:00-05:00
Rated 5 out of 5 by from Works as advertised. University classroom environment.
Date published: 2018-10-09T00:00:00-04:00
Rated 5 out of 5 by from works on Mac OS-X 10.6, XP etc. On my MacBookPro with VMware Fusion, the device is working on both OS-X (native) and XP (VMware). On the Mac, you have to figure out with the serial assistant how to name the port. Next I worked smooth with SecureCRT. Then I upgraded to OS-X 10.7, waiting for the driver now...
Date published: 2011-08-03T00:00:00-04:00
Rated 5 out of 5 by from Excellent Technology Great product. Fits in your pocket.
Date published: 2019-06-26T00:00:00-04:00
Rated 5 out of 5 by from The most reliable and versatile adapter I have found I have worked at a university and a biotech R&D company where we had equipment with serial interfaces. The 19HS has worked with the widest variety of units and with the fewest errors of any adapter I have used. Two thumbs up.
Date published: 2015-08-16T00:00:00-04:00
Rated 5 out of 5 by from Works Great. Only one we could find that works with a variety of CNC equipment. We use it to upload/download from a laptop.
Date published: 2014-10-30T00:00:00-04:00
Rated 5 out of 5 by from I would recommend this product As a student learning Networking this tool has proved to be great!
Date published: 2019-05-28T00:00:00-04:00
Rated 5 out of 5 by from Had Good Luck on Windows. Still trying on Android/Linux On Windows XP with downloaded drivers I have great luck accessing several serial devices from my laptop. Still trying to get things working on Android/Linux. I see code for this device in the kernel source code for my Android phone (Samsung). When I connect I can see that the USB bus "sees' the device. But there seems to be no tty device file created that allows me to access it. Rats!
Date published: 2013-01-14T00:00:00-05:00
Rated 5 out of 5 by from Great product, easy to use, Used it to transfer some data from an IV pump to a computer.. Load and extract data
Date published: 2019-06-14T00:00:00-04:00
Rated 5 out of 5 by from Worked great, but for one minor thing Great product, help me upgrade the firmware on my telescope. Just one issue, no drivers available for the Mac OSX 10.9 - drivers exists for 10.8 and below. So, can I expect the drivers to be updated for 10.9? I had to run the software from a friends PC to use the hardware.
Date published: 2014-01-21T00:00:00-05:00
Rated 5 out of 5 by from best I've found! I've used the USA-19HS for ~5 years with several industrial automation companies, really works perfectly with win7-win10 32/64bit. Highly recommended.
Date published: 2017-06-09T00:00:00-04:00
Rated 5 out of 5 by from Best programming USB tp Serial adapter on the market! If you take care of this guy, it will be your companion for a long time. It will live it your programming bag and you will know that the thing will work every time for you.
Date published: 2019-02-11T00:00:00-05:00
Rated 5 out of 5 by from The product works great with connecting to UNIX consoles Love the product because very east to connect to UNIX console.
Date published: 2012-06-13T00:00:00-04:00
Rated 5 out of 5 by from Product was defective upon receipt Product did not work was defective upon receipt. Did not work when setup called our IT and upon their review they stated the issue was this device which we purchased to replace an old one.
Date published: 2017-08-10T00:00:00-04:00
Rated 5 out of 5 by from Plug and Play!!! Finally a product that actually works the first time without any problems. IÃ?ve used this adapter on several UPS manufactures without any problems. I am using Windows 8 and have the latest version of Hyper Terminal. I highly recommend the 19HS!!!
Date published: 2013-05-06T00:00:00-04:00
Rated 5 out of 5 by from I dont know yet I havent had a chance to use it yet the driver on the CD that shipped with the device had a windows 7 driver despite the advertisement stating that it was supported by windows 10 I went to the web site and after 10 minutes of searching I found the windows 10 driver I loaded it per instructions and my laptop didn't blue screen
Date published: 2019-07-20T00:00:00-04:00
Rated 5 out of 5 by from YES I would Vehicle module programming
Date published: 2021-03-11T00:00:00-05:00
Rated 5 out of 5 by from Easy as pie! I am by no means an IT expert. I was told by one that I needed this USB Serial adapter so I purchased it to connect a specialized printer in a laboratory. It was as easy as attaching the serial port on one end and plugging the usb into my computer, and I was up and running! Nothing else to do. Easiest fix ever!
Date published: 2021-02-18T00:00:00-05:00
Rated 5 out of 5 by from Really the only one, that works... We need it to connect our OPEL and SAAB TECH2 diagnostic tools with our laptops for SW downloads and this adapter is really the only one, that really works.
Date published: 2021-04-26T00:00:00-04:00
Rated 5 out of 5 by from Just what I needed! Used this adapter to download embroidery designs to my older Bernina 185 sewing machine. It worked liked a charm. Very pleased.
Date published: 2021-06-05T00:00:00-04:00
Rated 5 out of 5 by from I would buy this product again and again I use the Keyspan USB Serial Adaptater to connect a Philips Pronto RU940 on my PC under Windows 10. The Pronto comes from the year 2002. It is possible for me to use the Philips Pronto Edit application in order to personnalez the parameters of the Pronto remote command. No problem to install the driver of the Keyspan and to discover the Pronto connected via the serial interface. Thank's to Tripp-Lite for this good product.
Date published: 2021-03-07T00:00:00-05:00
Rated 5 out of 5 by from I would buy this product again! I'm a control's Technician, this connection works great on all of my devices!
Date published: 2022-04-23T00:00:00-04:00
Rated 5 out of 5 by from I would recommend this to everyone Easy Peary setup and very smooth
Date published: 2022-06-20T00:00:00-04:00
Rated 5 out of 5 by from Work without issue To communicate with the Alaris infusion PC & pump; software installation is quick & easy
Date published: 2022-06-20T00:00:00-04:00
Rated 5 out of 5 by from Works as advertised I use this adapter to connect an interface
Date published: 2022-06-27T00:00:00-04:00
Rated 5 out of 5 by from Works great Connecting my circa 1990 device 25 pin RS232 to USB.
Date published: 2022-06-27T00:00:00-04:00
Rated 5 out of 5 by from I would buy this product again It worked great with my Leica cassette and slide printers for my Pathology laboratory.
Date published: 2022-05-27T00:00:00-04:00
Rated 5 out of 5 by from USB Adapter that works Finally, found a USB to serial adapter that works consistently with Allen Bradley devices.
Date published: 2022-03-11T00:00:00-05:00
Rated 5 out of 5 by from Great product. Quick response Has very quick response time and is very easy to use
Date published: 2022-09-07T00:00:00-04:00
Rated 5 out of 5 by from Great adapter for console work Works great for connecting laptop to Cisco switch management ports.
Date published: 2022-08-02T00:00:00-04:00
Rated 5 out of 5 by from Have used these for over a decade… … and they're the most reliable!
Date published: 2022-08-22T00:00:00-04:00