Qty:1
TRENDnet TU-S9 USB to Ser... has been added to your Cart

Other Sellers on Amazon
Add to Cart
$1.58
+ $10.99 shipping
Sold by: ELVESsupply
Add to Cart
$13.94
& FREE Shipping on eligible orders. Details
Sold by: GB888
Add to Cart
$13.95
& FREE Shipping on eligible orders. Details
Sold by: Blackhawk Surplus
Have one to sell? Sell on Amazon

TRENDnet TU-S9 USB to Serial Converter

4.4 out of 5 stars 2,236 customer reviews
| 261 answered questions

Price: $9.93 & FREE Shipping on orders over $49. Details
In Stock.
Ships from and sold by Amazon.com. Gift-wrap available.
USB 1.1
RS-232 (Serial)
    This fits your .
  • Enter your model number to make sure this fits.
  • Interface: USB 1.1 Type A RS-232 (9-pin) Male
  • Supported OS: Windows 7 (32/64-bit)/Vista (32/64-bit)/XP(32/64-bit)/ 2000/ME/98SE Mac OS 10.1~10.6
  • Install as a standard Windows COM port, full RS-232 modem control signals, RS-232 data signals, TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI, GND
  • 28/24 AWG Cable Gauge with 500kbps Data Rate
  • Easy Plug and Play installation with 2-years limited warranty
  • Cable Length: 26 inch
191 new from $1.58 4 used from $8.94 1 refurbished from $5.90

Need expert advice? Ask the manufacturer directly. Learn More

Live Chat Email

Upgrade Your Gadgets.
Shop the must-have new computer products. Learn more
$9.93 & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • TRENDnet TU-S9 USB to Serial Converter
  • +
  • HDE 6ft DB9 9-Pin Serial Port to RJ45 Cat5 Ethernet LAN Console Cable
  • +
  • Sabrent USB 2.0 to Serial (9-Pin) DB-9 RS-232 Converter Cable (CB-DB9P)
Total price: $26.91
Buy the selected items together


Product Description

Size: USB 1.1 | Style: RS-232 (Serial)

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.

Product Information

Size:USB 1.1  |  Style:RS-232 (Serial)

Technical Details

Collapse all
Brand Name TRENDnet
Item model number TU-S9
Hardware Platform Pc
Operating System Windows 7 (32/64-bit)/Vista (32/64-bit)/XP(32/64-bit)/ 2000/ME/98SE, Mac OS 10.1~10.6
Item Weight 3.5 ounces
Product Dimensions 9 x 7 x 2 inches
Item Dimensions L x W x H 9 x 7 x 2 inches
Color Blue

Additional Information

ASIN B0007T27H8
Customer Reviews
4.4 out of 5 stars 2,236 customer reviews

4.4 out of 5 stars
Best Sellers Rank #1 in Electronics > Accessories & Supplies > Computer Accessories > Computer Cable Adapters > Serial Adapters
Shipping Weight 3.5 ounces (View shipping rates and policies)
Date First Available February 14, 2005

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.

Feedback

Would you like to tell us about a lower price?

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By Mahmoud Al-Qudsi on March 9, 2009
Style Name: RS-232 (Serial)Size: USB 1.1 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.
7 Comments 319 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Style Name: RS-232 (Serial)Size: USB 1.1
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 104 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Style Name: RS-232 (Serial)Size: USB 1.1
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 66 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Style Name: 10/100 MBPS EthernetSize: 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.
11 Comments 106 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Style Name: RS-232 (Serial)Size: USB 1.1
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!
7 Comments 40 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Style Name: RS-232 (Serial)Size: USB 1.1 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 29 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Style Name: 10/100 MBPS EthernetSize: 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 33 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse
Style Name: RS-232 (Serial)Size: USB 1.1
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 19 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback.
Sorry, we failed to record your vote. Please try again
Report abuse

Most Recent Customer Reviews

Set up an Amazon Giveaway

TRENDnet TU-S9 USB to Serial Converter
Amazon Giveaway allows you to run promotional giveaways in order to create buzz, reward your audience, and attract new followers and customers. Learn more about Amazon Giveaway
This item: TRENDnet TU-S9 USB to Serial Converter