what chipset is this?

I'm sure the OP either already has the answer for this, or has moved on...but I wanted to answer this question for anyone else that might want to know (because it took me quite a while to research all the information for myself).This device does not use either of the two main manufacturer's chipsets (it's not an FTDI nor a Prolific). Rather, it uses a TI (Texas Instruments) chipset. While those other chipset manufacturers both make some quality chips, the TI USB-->serial chipset seems to be the de-facto standard in maximum compatibility with the widest array of serial device types.

is it work for Cisco 881router? Thanks

I'm not familiar with the 881 product specifically, but it, and older Keyspan models, have worked fine for every other Cisco router or switch that I have worked with over the last 20 years. I've also used it with Adtran and other products using serial connections.

is this compatible with windows 10 out of the box or do drivers need to be downloaded from website? thanks

I am continuing to use the 8.1 drivers I downloaded from keyspan on win 10. The zip from keyspan was named Driver-for-USA-19HS-vb5-Windows-8.1.zip but they may have a newer version for win10 but I did not need it.

Are there DOS drivers for this or another usb serial device?

Sorry I have no real answer to your question. I am doubtful about DOS drivers for the Keyspan device, and the Tripp Lite/Keyspan web page does not show any drivers at all for the device. Normally Windows and MacOS have built-in compatible drivers, which in my experience work perfectly well, but I suspect there are none for DOS. I believe the cheaper devices that use the Prolific chipset may have DOS drivers. They often are shipped with a mini-CD with drivers and manuals. I have found this impossible to use since all my computers use slot-loading optical drives which cannot accept the mini-CD.

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🔗 Connect with Confidence!

USER FRIENDLY DESIGN - DB9 serial port recognized as a COM port for instant compatibility with your software.
SEAMLESS CONNECTIVITY - Easily connect your serial devices to any USB-enabled computer.
HIGH SPEED DATA TRANSFER - Experience lightning-fast data rates of up to 230 Kbps, doubling standard speeds.
NO EXTERNAL POWER NEEDED - Power is drawn directly from your computer, simplifying your setup.
REAL TIME STATUS UPDATES - LED indicator keeps you informed of adapter status and data activity.

The Tripp Lite Keyspan USB-to-Serial Adapter is a compact and efficient solution for connecting serial devices to USB computers. With plug-and-play convenience, it eliminates the need for external power and supports high-speed data transfer rates of up to 230 Kbps. The built-in LED indicator provides real-time status updates, making it an essential tool for professionals seeking reliable connectivity.

Reviews

A**R

Five Stars

Working fine for my need..I use this for communication with the Substation relays.SEL, MICOM, SIPROTEC, etc..

9.11.2016

S**A

Best usb-serial adapter.

I have tried many adapters unsatisfactorily but this has proved to be the best.

9.08.2014

T**A

Five Stars

Very Good Experience......

1.11.2014

A**X

Works perfectly

I’m using this to do connect with medical devices for maintenance. I’ve tried many other USB to serial adapters but I’ve had many issues. This is the only USB to serial adapter that always works

5.01.2023

M**L

Producto Excelente, entrega rapida.

Este producto es bien conocido por mi, lo uso constantemente con impresoras POS y es muy recomendable.El precio es muy aceptable y la entrega bastante rapida.Muy Recomendable.

12.07.2021

J**7

Worked first time

After purchasing a few from eBay that didn’t work or failed first time… this one is robust and worked first time …. Great purchase.

6.12.2022

C**N

Funziona perfettamente

Prodotto di qualità superiore alla media. Disponibile anche un piccolo software per gestire la periferica e testare la comuncazione.Arrivato in tempi brevissimi!

6.06.2017

O**O

Keyspan USB to serial adapter is just the best

Keyspan USB to serial adapter is just the best in the market. It works immediately 100% compatible with windows. I got also one I used with my mac for years. Strongly recommended!

3.11.2021

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Brand	Tripp Lite
Item Height	2.75 Inches
Item Width	5.8 Inches
Product Dimensions	22.86 x 14.73 x 6.99 cm; 158.76 g
Item model number	USA-19HS
Number of USB 2.0 Ports	1
Number of Serial Ports	1
Are Batteries Included	No
Item Weight	159 g

Tripp Lite Keyspan USB-to-Serial Adapter

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