The TU-S9 USB to Serial converter allows you to connect a RS-232 serial device such as a modem to a USB port on your Desktop or Laptop PC.
TRENDnet TU-S9 - serial adapter is rated 4.6 out of 5 by 5.
Rated 5 out of 5 by Brazos from This is THE serial-to-USB adapter you needWe used a variety of S2U adapters with brand names like Tripp Lite in the past. But even the good ones would always run into a device which it was not compatible with or a Windows OS for which the driver was not stable enough, until we found this TrendNet adapter. Now we standardize on the Trendnet because it has never given us a problem in the field.
Date published: 2018-04-25
Rated 5 out of 5 by ITGuy from Excellent Product !!This is the best usb to serial adapter in the market, it wont disappoint you. Recommended !!!
Date published: 2017-12-27
Rated 4 out of 5 by pata123 from Light weight with really like the leingth.works well with our product it fits all of our applications.
Date published: 2017-09-07
Rated 5 out of 5 by Jerky from It works.This is a simple Adapter and it works. No drivers needed on anything I have used it with. The design allows you to pull and push on it and the RS-232 adapter does not come apart like others I have used. I am buying a couple more for work.
Date published: 2016-07-25
Rated 4 out of 5 by NomaMitch from This is my favorite adapter of its kind. Clean looking and doesn't feel cheap like some of the others.