Other Sellers on Amazon
+ Free Shipping
+ Free Shipping
Tripp Lite Keyspan High-Speed USB to Serial Adapter, PC & Mac (USA-19HS)
|Number of Ports||1|
About this item
- Make sure this fits by entering your model number.
- Serial adapter allows a serial device to be connected to a USB computer
- Plug-and-play convenience:DB9 serial port is seen as a COM port by your computer, and is available for use by any program that accesses COM ports
- No need for an external power adapter:draws power directly from your computer via the USB connection
- DB9 serial port supports data transfer rates up to 230 Kbps:twice the speed of a standard built-in serial port
- LED shows adapter status and data activity at a glance
Consider this Amazon's Choice product that delivers quickly
Frequently bought together
Customers who viewed this item also viewed
Customers also viewed these products
This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Have a question?
Find answers in product info, Q&As, reviews
Your question may be answered by sellers, manufacturers, or customers who purchased this item, who are all part of the Amazon community.
Please make sure that you are posting in the form of a question.
Please enter a question.
From the manufacturer
Connect a Serial Device to a USB Computer
Keypsan by Tripp Lite's USA-19HS USB High-Speed Serial Adapter is the easy way to add a serial port to a computer without the hassle of installing a serial card, turning off the PC or connecting an external power adapter. The USA-19HS draws power directly from your computer through the USB connection. Simply plug it into the USB port of your computer using the included cable, install the software and you're ready to connect a serial device. Featuring data transfer rates up to 230 Kbps, the USA-19HS can be used with any RS-232 serial device hand-held scanners, point-of-sale systems, touch screens and more.
- Connects 9-pin serial device to computer or laptop USB-A port
- Supports data transfer speeds up to 230 Kbps
- Detachable 3-foot USB cable included
- No external power source required
- Works with Windows (up to 10) and Mac OS (up to 10.11)
- 3-Year Limited Warranty
Plug-and-Play Convenience, Bus Powered, High-Speed Data Transfer & LED Indicator
The USA-19HS is easy to use. Its DB9 serial port is seen as a COM port by your computer, and is available for use by any program that accesses COM ports. It provides a simple way to add a serial port to a PC without the hassle of installing a serial card, turning off the PC or configuring IRQs.
There's no need for an external power adapter! The USA-19HS draws power directly from your computer via the USB connection.
The USA-19HS supports data transfer rates up to 230 Kbps-twice the speed of a standard built-in serial port.
A green LED shows adapter status and data activity at a glance.
Detachable USB Cable, Free Software Upgrades and 3-Year Warranty
The USA-19HS comes with a 3-foot USB device cable to connect the serial adapter to the computer. The adapter will also work with any user-supplied USB cable up to 5 meters long.
Need to update the USA-19HS software? The process is quick and simple with free software downloads. Simply visit the USA-19HS product page on Tripp Lite's website, click on the Help and Downloads tab and select your desired software download.
The USA-19HS is manufactured in compliance with strict RoHS specifications, reflecting Tripp Lite’s commitment to environmental responsibility. For peace of mind, it comes backed by a 3-year warranty.
Why Choose Tripp Lite?
Founded in 1922 in Chicago, Illinois, Tripp Lite is a leading manufacturer of products to power, connect, house and protect your equipment. From the largest data center to the smallest home office, Tripp Lite products keep your equipment running effectively and efficiently. Whether you need to supply power to servers and have reliable battery backup, connect high-resolution video sources to displays and digital signs, or organize and secure IT equipment in rack enclosures, Tripp Lite has the complete solution. Plus, before and after your purchase, our Chicago-based, in-house technical support specialists are available to assist you by phone, email and live chat. With over 90 years of quality products and service, Tripp Lite is a brand you can trust.
Compare with similar items
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 3-year limited warranty
Top reviews from the United States
There was a problem filtering reviews right now. Please try again later.
I've been using the Keyspan USA-19HS for years. The first one was purchased after reading recommendations from several control system experts, and I haven't been disappointed. Rockwell Automation sells their own version of a USB serial port adapter (PN 9300-USBS), but it's about $130. Don't bother. The Keyspan is inexpensive and has proven to be 100% compatible with everything I've needed to connect to via a serial cable.
I've used it with laptops and desktops running Windows 98SE, Windows XP and Windows 7. I've used it on SLC 5/xx series processors, ControlLogix 5000 processors, Siemens/TI 505 series processors, Keyence laser measurement equipment, modems, serial printers, barcode scanners, Reliance and Rockwell/Allen-Bradley drives, and just about everything else. Never a problem. It works with straight serial cables, null modem cables, and every type of serial adapter I've thrown at it. The Keyspan USA-19HS is the cheapest piece of control system communication hardware that I own, and it's probably the most-used. It has never let me down.
Since I first started using the Keyspan adapter, I've bought over a dozen more for service techs, co-workers and even a couple of bosses. The Keyspan is extremely configurable, fast, reliable, durable and easy to use. The Keyspan adapter comes with a driver CD and a USB cable and takes just a few minutes to set up. I keep one in my laptop bag at all times.
UPDATE 4/5/12: it appears that Tripp-Lite has made a few changes since they took over the Keyspan line. Among the changes was a decision to use a cheaper USB socket. From the outside, it looks almost the same. The only notable difference is a lack of molded numbers (1, 2, 3 and 4) on the end of the plastic tab in the middle of the port. Unfortunately, the cheaper USB socket doesn't retain the cable connector as well as the older ones did. The weaker spring conductors allow the cable to be pulled most of the way out of the socket, resulting in a lost connection and possibly a BSOD (blue screen of death).
I took a couple of the older Keyspan adapters (no Tripp-Lite logo on the housing) and a couple of the newer Keyspan adapters (with the Tripp-Lite logo on the housing), opened the housings and compared them. The differences I saw between old and new were minor: notably a different PCB manufacturer's logo and a couple of chips that had changed brands. And the USB type B port. The old has a partial back shell (you can see the white plastic on the back of the port), while the new has a full back shell (can't see the plastic in back).
The few cents that Tripp-Lite saved by using a cheaper socket isn't worth it. Whereas the old Keyspans would easily support the weight of the adapter + a 10 ft. coiled-up serial cable, the new Keyspans cannot. The new ones can't support the weight and allow the USB cable to pull partway out of the port. I tested 3 of the new Keyspan adapters and they all performed the same: almost no load-bearing capability at all.
Since the adapters still work fine except for the USB port, I simply desoldered the cheap-o port from each of the new adapters and replaced it with an FCI port (FCI PN 61729-1011BLF -- 54 cents each). No more problems. Most users probably won't be able replace the port, so a quick (if not awkward and/or ugly) fix is to either glue the USB cable into the port or use tape or a heavy rubber band to retain the cable.
Tripp-Lite, shame on you for ruining a perfectly good adapter to save a few pennies. I have reduced the adapter's 5 star rating to 2 stars based on the poor quality of the new USB port. Like the old Baskin-Robbins saying goes, "There is hardly anything in the world that someone cannot make a little worse and sell a little cheaper, and the people who consider price alone are that man's lawful prey."
UPDATE 10/11/12: A coworker bought a half dozen new Keyspan USA-19HS adapters today, so I wasted no time in testing them out to see if the USB port problem was fixed. I tested all 6 of the adapters and was happy to see that none suffered from loose USB ports. The ports don't have any numbers (1, 2, 3 and 4) molded on the end of the plastic tab in the middle of the port, so I'm guessing they're not anything special, but they seem to hold onto the USB cable quite well. I only hope Tripp-Lite has learned a lesson about trusting others to adhere to high quality standards based on faith alone. I have updated the adapter's rating from 2 stars to 4 stars based on seeing and testing this batch of adapters.
I purchased this item for the sole purpose of retrofitting an Allen-Bradley MicroLogix 1400 to a machine still running on a 1980's-era SLC 150. (Please... Don't ask.) I basically needed to pull the program from the venerable 150 and transliterate the instructions into RSLogix for the 1400. I won't bore you with the "joy" that is back-engineering a program line by painstaking line in a utility written for DOS, but I WILL tell you that the ancient PCIS software recognized the USA-19HS as a "real" RS-232 port which worked flawlessly at 19.2k baud in DOSBox, a small miracle in and of itself considering the SLC 150 was way overdue for retirement. I am also pleased to report that this adapter works equally well with the MicroLogix 1400 and autoconfigures like a dream in RSLinx.
The USA-19HS is a remarkably lightweight piece of kit that you can easily slip into your laptop bag or pocket; the PCB is housed in a translucent smoke-colored plastic that I wish was a little sturdier. The tapered side of the adapter has a snug-fitting USB B female connector which is more than adequate to hold the weight of the adapter itself, while the wider side contains the obligatory 9-pin Male RS-232 port with securely attached posts that I've yet to see come unscrewed in use. The clamshell package also comes with a software installation disk that you MUST run before plugging the adapter into a Win7 laptop or PC in addition to a USB A to B cord of decent length and quality. You may want to use your own though, because I managed to pull this adapter free and had it bounce and skitter several feet away. x.x I can't imagine it ever breaking in "normal" use, but in an industrial application, you definitely want to be more careful with it. The housing barely held together after that, but it continued to work without any issues whatsoever.
The bright side to this story is that Tripp-Lite's customer service was extremely helpful and accommodating when I called them to explain what had happened. Without any further questions much less hassle, they told me they'd just send a new unit directly to my workplace free of charge. Although they cautioned me not to make a habit of submitting future warranty claims, I'm still very pleased that they stand by their products so much for commercial/industrial users.
Were it not for the plastic Tripp-Lite uses in the unit's housing, I'd have given the USA-19HS five stars easily. Granted, the 9300-USBS is much more ruggedized and arguably better suited for industrial use, but it also uses an FTDI chipset with no COM retention and has a far more hefty price tag to boot. All said and done, I'd rather just save my money and treat the $25 Keyspan with kid gloves. Gripes aside, it's a handy tool that'll always reside in my laptop bag.
Top reviews from other countries
Different story with the Kingspan I wish I bought this one the first time would have saved me a lot of hassle and hair pulling.
A bit more expensive than the other two but it has been worth every penny, works flawlessly, brilliant bit of kit.
I can now control my telescope remotely and it works every time.
Cable does work in that its green LED does flash slow & fast so "it does what it says on the can"! Which is better than any other cable as it shows the cable is connecting OK.