TRENDnet Model TU-S9 26" USB to Serial Converter

Pros: Windows 8/7/XP - Works
Linux (Ubuntu/Debian/Red Hat) - Works

I have used so many models of this product over the years and this one has always worked.

Cons: None

Pros: It worked fine for serial mice

Cons: Assuming that it wasn't horribly mangling my 57600 baud connection wasted several hours.

The driver certainly didn't help dissuade me from this obviously flawed assumption; it even implied that it could handle higher bauds.

Manufacturer Response:

Valued customer,

We are sorry for any inconvenience this may have caused you. Please e-mail us at sales@trendnet.com, reference "New Egg product review", and someone will contact you in an expedited manner. We look forward to working with you directly and restoring your faith in TRENDnet products.

Warmest Regards,

TRENDnet Sales Team

Pros: Adds another serial port to a PC.
Works exactly like it's supposed to!

Cons: none

Other Thoughts: I bought this coverter to add a seconds serial port to my PC for troubleshooting networking equipment. I installed the XP drivers, plugged in the cable and both HyperTerminal and Putty work great with this cable. No problems at all. Yay! The cable I got was white, for those of you who are really expecting a blue one, just a FYI

Pros: Great solution to add a serial port to VMs running under VMWare EXSi 5. VMWare doesn't like add in serial port cards, but this works great.

Cons: None.

Pros: Been using one for years to program 2-way radios with no ill effects.

Cons: none that I have found in the 3 years I have been using one.

Other Thoughts: Had to buy a second one for a co-worker before he stole it from me.

Pros: Inexpensive, works out of the box.

Cons: BSODs. Using the device for the last 2 weeks on Win 7 x64, I have had two blue screens with high serial data loads, and one time during serial device reset. I have not 100% confirmed the USB driver was the cause; however, the blue screens occurred when interacting with the serial device and the PC has not had a BSOD in over a year.

Other Thoughts: I suspect the BSODs are dependent on serial errors and/or heavy load. Some serial devices might work fine. For example, when doing basic serial logging overnight; I have not had a problem.

Manufacturer Response:

Valued Customer,

We are sorry for any inconvenience this may have caused you and we would like to replace it due to possible defect. Please contact us at sales@trendnet.com, reference "New Egg product review”. Someone will contact you immediately. We look forward to working with you directly to restore your faith in TRENDnet products.

Warmest regards,

TRENDnet Sales Team

Pros: Takes about 2 minutes to install drivers from CD. The adapter is then ready for use. Excellent Win 7 64 bit support, which is a deficit of some other comparable units. Good price break--all of these used to be $40 to $50 items.

Cons: No cons. Does its job flawlessly.

Other Thoughts: If you are tired of maintaining an old computer just to talk to old serial (9 pin) devices then this is for you.

Pros: Works very well, and is built well also. Has a good sturdy feel to it, definitely not built cheaply. Very simple to install and get up and running.

Cons: A bit pricey.

Other Thoughts: If you're stuck with old serial devices and have no COM port to connect them to, you need the TU-S9.

For anyone with a Uniden scanner looking for a serial to USB convertor, it's worth noting that the TU-S9 uses the exact same Prolific chip as Uniden's own USB-1 cable. Save the money and buy this instead of the USB-1 cable, and make use of the free cable that's included with the scanner. It's the exact same thing in the end!

Pros: It works with Win7 64 bit.
Connected with an old serial medical product that is not manufactured to any spec.
It worked fine using the included driver.
The reason I had to purchase this item is because the last one I had does not have any Win7 support.

Cons: Windows does not install the driver automatically.
It's a serial port, a dinosaur, it should not be that difficult to produce a USB serial class device and use the Win7 built in driver support.
Meaning if it installed without any OEM driver it would be perfect.

Pros: got this to connect my laptop to an RS-485 modbus line for testing a micro-controller. needed the TU-S9 plus a separate RS-485 to RS-232 converter, but to my great surprise it all worked on the first try.

Cons: its not free?