Qty:1
Add to Cart

Other Sellers on Amazon
Add to Cart
$9.04
& FREE Shipping on orders over $35.00. Details
Sold by: LLYtech
Add to Cart
$7.33
+ $1.99 shipping
Sold by: KOOTION
Add to Cart
$7.99
+ $5.48 shipping
Sold by: Nu Image Corporation
Have one to sell? Sell on Amazon

Image Unavailable

Image not available for
Color:
  • TRENDnet USB 2.0 to RS-232 DB9 Serial Converter, TU-S9
  • Sorry, this item is not available in
  • Image not available
  • To view this video download Flash Player
      

TRENDnet USB 2.0 to RS-232 DB9 Serial Converter, TU-S9

| 49 answered questions

List Price: $14.99
Price: $8.77 & FREE Shipping on orders over $35. Details
You Save: $6.22 (41%)
In Stock.
Ships from and sold by Amazon.com. Gift-wrap available.
USB to RS-232 DB9 Serial Converter
USB 2.0
  • Connect a RS-232 serial device such as a modem to a USB port on your computer
  • Supports up to 500kbps data transfer rate
  • Detects USB suspend condition
  • Supports BUS Power, no external power adapter required
  • USB 1.1 Specifications, RS-232 serial interface. Supports data rate up to 6Mbps. Detects USB suspend condition
  • Compliant with Windows 8, Windows 7, Vista, XP, 2000, ME, 98SE and Mac OS 10.1-10.7
  • Easy Plug and Play installation with 2-years limited warranty
Show more
97 new 1 used from $143.73 1 refurbished from $69.95

Back-to-School Savings in Computers & Accessories
Back-to-School Savings in Computers & Accessories Check out our back-to-school deals in computers & accessories and save when you purchase from Amazon.com. Shop now

Frequently Bought Together

TRENDnet USB 2.0 to RS-232 DB9 Serial Converter, TU-S9 + Cisco Console Cable RJ45-to-DB9 + Plugable USB to RS-232 DB9 Serial Adapter (Prolific PL2303HX Rev D Chipset)
Price for all three: $26.02

These items are shipped from and sold by different sellers.

Buy the selected items together


Product Details

Style: USB to RS-232 DB9 Serial Converter | Size: USB 2.0
  • Product Dimensions: 9 x 7 x 2 inches ; 4 ounces
  • Shipping Weight: 4 ounces (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B0007T27H8
  • Item model number: TU-S9
  • Average Customer Review: 4.2 out of 5 stars  See all reviews (994 customer reviews)
  • Amazon Best Sellers Rank:
  • Date first available at Amazon.com: February 14, 2005

Product Description

Style: USB to RS-232 DB9 Serial Converter | Size: USB 2.0

This 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. Connect a RS-232 serial device such as a modem to a USB port on your computer. Easy installation with Universal Plug and Play. Compliant with Windows 7/Vista/XP/2000/ME/98SE and Mac OS 10.1~10.6 . 2-year limited warranty.

Customer Questions & Answers

Customer Reviews

Works flawlessly, downloaded drivers from TRENDnet's site to ensure having the latest on hand, and installed in Windows 7 64-bit Pro.
TC
The problem was in the converter because, we have a different converter with does make everything work when the different converter is in the same place.
Aleksandr Levchuk
TRENDnet USB to PS/2 Converter TU-PS2 (Blue) This item so far has been working just great on my windows 7 machine using my PS2 mouse and keyboard.
Le Roy Boy

Most Helpful Customer Reviews

247 of 255 people found the following review helpful By Mahmoud Al-Qudsi on March 9, 2009
Style Name: USB to RS-232 DB9 Serial ConverterSize Name: USB 2.0 Verified Purchase
This USB-RS232 converter is based on the PL-2303 chipset and is one of the few with true cross-platform support. Other models are lacking drivers for Mac, Linux, Vista/7, and 64-bit flavors of Windows. If you need something that'll just work no matter what you're running get a USB-RS232 adapter based either on the PL-2303 (like this one) or the FTDI chipsets. If you can't get this to work out of the box, just Google for "PL-2303 <your OS> drivers" and you should be good to go.

There are other converters out there that provide more reliable data transfer at higher speeds, but this is a great buy for the money and will suffice for just about any task you need it for.
4 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
87 of 89 people found the following review helpful By J. Duncan on June 30, 2006
Style Name: USB to RS-232 DB9 Serial ConverterSize Name: USB 2.0
Used this to connect my Garmin eTrex with serial adapter to my USB only laptop. Installed with no difficulty and works as it should.
1 Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
60 of 63 people found the following review helpful By Mikhail Stoma on June 17, 2006
Style Name: USB to RS-232 DB9 Serial ConverterSize Name: USB 2.0
Connected 4 of these to the same computer to run DNS. Till now works 24/7 for a couple of monts without any problem neither resouce conflicts (other SYBA hardware gave me tons of problems). Didn't have even to install the driver. WinXP recognized it as "Prolific USB-to-Serial Comm Port (COM3)" to (COM6). Recomended product.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
92 of 100 people found the following review helpful By Michael D. Adams VINE VOICE on March 6, 2009
Style Name: USB to 10/100Size Name: USB 2.0 Verified Purchase
I was looking to purchase a USB>Ethernet adapter for my Series2 Tivo. Since the Tivos are known to be a little picky about the adapter used, I did a lot of research to find out what was out there. This adapter kept popping up, so even though it's not listed on Tivo's website ([...] I decided it was worth a shot. It had gotten great reviews pretty much everywhere.

The adapter (TU2-ET100) arrived yesterday. The USPS shipping was a bit slow, having actually PASSED my house in route to another hub before coming to me. But the packing was good, and it was in a nice box with a CD and fairly basic instruction book. I did not need either. The adapter itself is pretty light weight, but not fragile. It's a little boxy, but that actually is a good thing as I want it to sit flat.

Within a second of plugging this in to my Tivo, it had obtained an IP address from my router and was churning away with full-duplex speed! The world of networked Tivo has opened lots of cool doors, thanks to this simple little adapter! According to the box, this adapter WILL work with the Nintendo Wii, as well.

Note to those looking... BE CAREFUL not to mistake this with the TRENDnet USB to 10/100Mbps Adapter (TU-ET100C) adapter, which sells for a similar price (slightly cheaper) and looks more "modern", but only operates on the USB 1.1 specification.

Also note... don't waste your time going to Best Buy. They don't sell these, and the guy who offered to help me find it told me matter-of-factly that "there is no such thing as a USB>Ethernet adapter." Sure thing, buddy.
7 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
25 of 25 people found the following review helpful By Christian Bell on August 8, 2011
Style Name: USB to RS-232 DB9 Serial ConverterSize Name: USB 2.0
We have a half-dozen of these TrendNET TU-S9 adapters in our environment; we use them for connecting to RS232 devices. We selected them because they support both Windows and Macs. They work great.

With the release of Mac OS X Lion (10.7), the TrendNET adapters no longer work with TrendNET's own drivers. I submitted a help desk ticket to TrendNET's tech support inquiring about the status of drivers for Lion, and received the following response:
"We do not have drivers for the MAC os [sic] 10.7 and do not have any current plans to support the 10.7 OS."

But fear not: It's easy to get these working with Lion. The chip inside this adapter is a Prolific 2303; there are several USB-to-serial adapter that use this chip. Prolific itself produces a 64-bit driver for this chipset, and lo, the TU-S9 works once it is installed. The driver can be found by Googling 'PL-2303 driver'. It's the file labeled `md_PL2303_MacOSX10.6_dmg_v1.4.0.zip' on the resulting page (or was at the time I wrote this review).

I just tested it with my TU-S9 and it works once I install this driver. Enjoy!
6 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
23 of 24 people found the following review helpful By Method2Madness "Alex" VINE VOICE on November 19, 2009
Style Name: USB to RS-232 DB9 Serial ConverterSize Name: USB 2.0 Verified Purchase
Purchased this to replace an older iogear USB to serial adapter that refused to work with 64 bit Windows products. I had to keep a separate 32 bit Windows partition to use whenever I needed to utilize the serial adapter. Well I'm pleased to say this is no longer the case and I was able to free up some needed space on my laptop! This works great with both Vista 64 bit and Windows 7 64 bit. I'm a Nortel Field Engineer and use this to communicate with various Nortel/Bay Networks routers and switches without trouble (Yes, it works with Cisco products as well). Works like a charm paired with TeraTerm and/or plain ole' HyperTerminal.

There's no difficult installation either, just run the setup on the included micro-cd and you're up and working in no time!

Kudos to TRENDnet for making such a great product at a great price!
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
31 of 34 people found the following review helpful By Red Baron on July 26, 2007
Style Name: USB to 10/100Size Name: USB 2.0 Verified Purchase
The ethernet port on my laptop stopped working, so I got this adapter to keep my laptop connected to the internet. It works great out of the box and I have noticed no decrease in internet performance relative to when the ethernet port was working.
2 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
15 of 15 people found the following review helpful By J. Clemens on April 19, 2009
Style Name: USB to RS-232 DB9 Serial ConverterSize Name: USB 2.0
I bought this product to program a microcontroller for a class project. I run a Windows 7 32 bit laptop and a 64 bit desktop. Works great on both.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again

Most Recent Customer Reviews

Search