Buy Used and Save: Buy a Used "Tripp Lite Keyspan High-Speed USB to Serial Adapte..." and save 47% off the $45.99 list price. Buy with confidence as the condition of this item and its timely delivery are guaranteed under the "Amazon A-to-z Guarantee". See all Used offers.
Other Sellers on Amazon
+ $11.99 shipping
+ Free Shipping
+ Free Shipping
Tripp Lite Keyspan High-Speed USB to Serial Adapter, PC & Mac (USA-19HS)
- Enter your model number to make sure this fits.
- 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
Frequently bought together
Customers who bought this item also bought
Special offers and product promotions
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)
- 2-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 2-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 2-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.
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
Top Customer Reviews
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.
After executing "mknod /dev/ttyUSB0 c 188 0", I am happily communicating with Palms and GPSs using the new /dev/ttyUSB0 device.
I had a device that came with a USB-Serial adapter from FTDI Chip that only worked intermittently, was poorly documented, and the vendor ignored my e-mail. The KEYSPAN USA-19HS worked flawlessly, is well documented, and comes with a powerful utility (which I did not need).
Recently I acquired a "Duplimate Mark IV bis" duplicate bridge card dealer. It uses a serial connection to the host Windows computer. I'm using an IBM Thinkpad T40 running Windows XP SP2.
The computer has no serial ports, but the Duplimate came with an adapter, as well as a serial cable. That adapter has a captive USP cable, and a DB9-F connector for the serial device (unusually, with screws - no independent serial cable needed). The adapter was identified only by manufacturer, FTDI Chip. It came with a mini-CD, which I explored and used to print out the manual. I eventually deduced that the adapter was an HL-340, which I found stamped on the DB9 connector and as the name of a folder on the mini-CD, but not in the manual. I installed a driver in that folder, and got the dealer to work - kind of. It would actually deal a hand only about half the time, otherwise taking several seconds to report a communications error. By the time I had hit Ctrl-A to restart dealing for the fifth time on a deal, I was wondering what I would do if it refused to deal. FTDI Chip has a web site, and I downloaded a driver from there - no use. I did perform a successful reinstall without using the HL-340 folder directly, with no change in results. A detailed e-mail to FTDI chip produced no response. If you ever have a chance to buy something from FTDI Chip - DON'T!
Two days ago, I ordered the KEYSPAN USA-19HS from Amazon for just under $32, with free shipping. It arrived today, and I put it through its paces. It comes with a full-size CD. First, I removed the old driver. When I installed the Keyspan software, which must be done with the adapter disconnected, the driver went right in. (I also took the time to register the product.) A Keyspan USB Serial Adapter folder appeared on my Programs menu, and it contains a powerful and potentially useful Keyspan Serial Assistant - as well as the manual in HTML and PDF. Don't read the manual on CD - it's slow - wait to read it on your computer. The manual is excellent, tho you may not need it.
The adapter has a short detachable USB cable, which is probably fine for most applications; but if you need a longer one, you can substitute. Using the serial assistant or Start-Control Panel-System-Hardware-Ports confirmed that the newly connected serial port was COM3. The DB9-M connector has nuts for the screws on a typical serial cable, so it would not mate with the Duplimate, which also has nuts. No problem, I had the serial cable that came with the Duplimate. While using the extra cable is not as convenient, I judge this to be the correct implementation, because it will mate with captive or specialized serial cables. Because my WinDup software was already configured for COM3, I was able to fire it up and start dealing immediately. No more communications errors, no more waiting to hit Ctrl-A if the machine did not start dealing immediately. It always started dealing as soon as I inserted the next board.