StarTech.com USB to Serial RS232 Adapter - DB9 Serial DCE Adapter Cable with FTDI – Null Modem - USB 1.1 / 2.0 – Bus-Powered (ICUSB232FTN)

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Compatible Devices Modem
Specific Uses For Product personal
Connector Type Serial/USB
Color Black
Item dimensions L x W x H 70.9 x 1.2 x 0.6 inches

About this item

  • MAXIMIZED PORTABILITY: This USB to serial RS232 adapter with FTDI features a single cable design removing the need for additional adapters and cables
  • CORRECT DTE/DCE CONFLICTS: Convert your available USB port into a null modem RS232 DB9 serial port, resolving any DTE/DCE conflicts
  • BROAD COMPATIBILITY: Compatible with your USB 1.0 or 2.0 ports, this RS232 converter works with your Windows, Mac or Linux systems
  • FAST TRANSFER SPEEDS: Experience fast speeds with this serial adapter, supporting a Baud Rate up to 921.6Kbps
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StarTech.com USB to Serial RS232 Adapter - DB9 Serial DCE Adapter Cable with FTDI – Null Modem - USB 1.1 / 2.0 – Bus-Powered
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StarTech.com 10' RS232 Serial Null Modem Cable - Null modem cable - DB-9 (F) to DB-9 (F) - 10 ft (SCNM9FF)
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From the brand

From the manufacturer

startech

Add a Null Modem RS232 serial port to your laptop or desktop computer through USB

usb

usb

usb

Corrects DTE/DCE Conflicts Without Additional Cables/Adapters

The USB to Null Modem Serial Adapter Cable (1-Port) converts an available USB 1.1 or 2.0 port into an RS232 Null Modem serial DB9 port, solving DCE/DTE conflicts directly, without requiring additional cross-wired serial cables or adapters.

COM Retention and Integrated FTDI Chipset

This compact adapter features COM retention, allowing the same COM port value to automatically be re-assigned to the port if the cable is disconnected and re-connected to the host computer, or if the system is rebooted.

The integrated FTDI chipset supports additional customization, advanced features, and compatibility not necessarily offered by other solutions.

An Ideal Solution For Any Setup

The USB to Null Modem adapter is compatible with a broad list of operating systems including Windows, Windows CE, Mac OS and Linux, making it easier to integrate into mixed environments.

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StarTech.com USB to Serial RS232 Adapter - DB9 Serial DCE Adapter Cable with FTDI – Null Modem - USB 1.1 / 2.0 – Bus-Powered (ICUSB232FTN)
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StarTech.com DB-9 (M) to DB-9 (F) Serial Adapter
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Price$32.46$12.99$18.95-15% $41.97
List: $49.60		$8.59
Delivery
Get it as soon as Monday, Jul 22
Get it as soon as Monday, Jul 22
Get it as soon as Monday, Jul 22
—
Get it as soon as Monday, Jul 22
Customer Ratings
4.64.6 out of 5 stars1,862
4.44.4 out of 5 stars78
4.54.5 out of 5 stars2,213
4.74.7 out of 5 stars2,305
4.54.5 out of 5 stars74
Easy to install
4.9
4.2
4.8
4.4
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Tech Support
5.0
4.0
—
4.0
—
Quality of material
4.7
4.7
4.8
—
—
Value for money
4.6
—
4.7
4.4
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Sold By
Amazon.com
Oikwan
Plugable Technologies
ProWarehouseDirect
Amazon.com
connector type
Serial/USB
USB 2.0
USB Type A
usb
Serial Adapter
number of ports
1
1
1
1
1
current rating
256 amps
1 amps
1 amps
—
1 amps
power plug type
no plug
—
type a 2pin na
no plug
—
warranty
Lifetime
Limited
Limited
Limited
Lifetime

Product information

Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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StarTech.com USB to Serial RS232 Adapter - DB9 Serial DCE Adapter Cable with FTDI – Null Modem - USB 1.1 / 2.0 – Bus-Powered (ICUSB232FTN)

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Product Description

USB to Null Modem (Cross-Wired) RS232 Serial Adapter Baud Rate up to 921.6Kbps Integrated FTDI USB UART Chip COM Port assignments maintained across reboot USB-powered - no external power adapter required Compatible with USB 1.1 or 2.0 Ports Compatible with Windows®, Mac OS and Linux Single cable design for portability The ICUSB232FTN FTDI USB to Null Modem Serial Adapter Cable (1-Port) converts an available USB 1.1 or 2.0 port into an RS232 Null Modem serial DB9 port, solving DCE/DTE conflicts directly, without requiring additional cross-wired serial cables or adapters. This compact adapter features COM retention, allowing the same COM port value to automatically be re-assigned to the port if the cable is disconnected and re-connected to the host computer, or if the system is rebooted. The integrated FTDI chipset supports additional customization, advanced features, and compatibility not necessarily offered by other solutions. The USB to Null Modem adapter is compatible with a broad list of operating systems including Windows®, Windows CE, Mac OS and Linux, making it easier to integrate into mixed environments. Backed by a StarTech.com 2-year warranty and free lifetime technical support. Perfect for IT Administrators looking to add legacy functionality to newer notebooks, PCs and servers that lack an integrated RS232 port Connect, monitor and control industrial/automotive sensors and equipment Connect bar code scanners, receipt printers and other point of sale devices Connect and program LED and Digital signage boards with serial communication ports Connect a satellite receiver, serial modem, or PDU USB to Null Modem serial adapter corrects DTE/DCE conflicts without requiring additional adapters or cables The FTDI chipset is highly customizable and broadly compatible, making it the ideal solution for any setup Portable USB-Powered design requires no bulky power adapter or outlet Specifications Warranty Information Warranty 2 Years Connector(s) 1 - Connector Type(s) USB Type-A (4 pin) USB 2.0 DB-9 (9 pin, D-Sub) Environmental Operating Temperature 0°C to 55°C (32°F to 131°F) Storage Temperature -20°C to 85°C (-4°F to 185°F) Humidity 5~95% RH Hardware Ports 1 Interface Serial Bus Type USB 2.0 Port Style Cable Adapters Chipset ID FTDI - FT232RL Packaging Information Package Height 1,5 in [39 mm] Package Length 5,7 in [14,6 cm] Shipping (Package) Weight 7,2 oz [205 g] Package Width 8,2 in [20,8 cm] Performance Serial Protocol RS-232 Max Baud Rate 921.6 Kbps Data Bits 7, 8 FIFO 256 Bytes Parity None, Odd, Even, Mark, Space Stop Bits 1, 2 MTBF 541,728 hours Physical Characteristics Weight of Product 3,2 oz [90 g] Color Black Material Plastic Cable Length 5,6 ft [1,7 m] Product Length 5,9 ft [1,8 m] Product Width 1,2 in [30 mm] Product Height 0,6 in [1,5 cm] Power Power Source USB-Powered Software OS Compatibility Windows® CE (4.2, 5.0, 6.0), XP Embedded, 98SE, 2000, XP, Vista, 7, 8, 8.1, 10, 11 Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016, 2019 macOS 10.6 to 10.15, 11.0, 12.0 Linux Kernel 3.0.x - 5.4.x (LTS Versions Only) Special Notes / Requirements System and Cable Requirements One available USB 1.1 (or better) port What's in the Box 1 - Included in Package USB to RS-232 Null Modem Adapter Driver CD Instruction Manual

Customer reviews

4.6 out of 5 stars
4.6 out of 5
1,862 global ratings

Customers say

Customers like the performance, ease of installation, quality and cord length of the electronic adapter. They mention that it works very well, it works reliably for hours, it feels like premium materials and that it's a great cable for prototyping. They also appreciate the value for money.

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PerformanceEase of installationQualityCord lengthValueConnectivityDriver
186 customers mention "Performance"173 positive13 negative

Customers are satisfied with the performance of the adapter. They mention that it works very well, flawlessly in Windows 10, and reliably for hours. It also works great on ASA/Catalyst, Powerconnect, Procurve, and other firewalls and routers. It works perfectly to connect their Uniden BCT15X programmable scanner to their PC.

"Completely painless to get working under Linux, and works just as expected, operating at standard RS-232 levels (±5V; it is not a TTL serial port)...." Read more

"Great because it uses FTDI chipset which is very important. Prolific chipsets are not as reliable...." Read more

"Works well to connect to the serial console on my PC Engines APU2 router...." Read more

"...I, in general, have been very pleased with the FTDI chipset that this uses...." Read more

39 customers mention "Ease of installation"39 positive0 negative

Customers find the installation of the adapter to be easy. They say the driver installs without any problems, and it works just as expected. Some customers also mention that the adaptor is a perfect tool for installers of equipment with serial console connections. They find it convenient to have a Null Modem and USB-to-DB9 adapter in one. Customers also appreciate the excellent technical support and current manuals.

"Completely painless to get working under Linux, and works just as expected, operating at standard RS-232 levels (±5V; it is not a TTL serial port)...." Read more

"...No drivers were needed in Windows 10, it was plug and play. It does come with a driver disk if you need it for older OSes...." Read more

"...Their products are are always high quality and their technical support is excellent, with current manuals and drivers always available online...." Read more

"...It’s entirely plug and play as well...." Read more

39 customers mention "Quality"39 positive0 negative

Customers are satisfied with the quality of the adapter. They mention that it has a good solid construction, is very reliable, and has premium materials. The adapter is solid with no crashing. Some like the activity lights and the status LEDs.

"...The TX/RX activity LEDs are a great feature, and it supports up to 3000000 baud (3 Mbaud)...." Read more

"...I have used them under both linux and macos. They are very convenient for serial consoles and the like...." Read more

"...Their products are are always high quality and their technical support is excellent, with current manuals and drivers always available online...." Read more

"...rock solid FTDI FT232R chip which in my experience is by far the most reliable in terms of the chip itself and drivers for modern Windows(Vista+)..." Read more

31 customers mention "Cord length"28 positive3 negative

Customers are satisfied with the cord length of the electronic adapter. They mention that it is a great cable for prototyping, RJ45 -> serial cables, and console patch cords. They also say that it works perfectly to connect to the console port of their equipment and is able to provide RS232 connectivity.

"...Next best thing is it has a built in null modem and the correct female DB9 connector so no having to use separate null modem or gender changer...." Read more

"One of the nicest null modem cables I've used. Works flawlessly in Windows 10 off a USB 3 port...." Read more

"This is a great cable for prototyping if your board doesn't support a TTL connection...." Read more

"...The RJ45 -> serial cables are nice because they don't need drivers, but they use up your NIC port, so if you're working in a datacenter that doesn't..." Read more

18 customers mention "Value"18 positive0 negative

Customers appreciate the value of the adapter. They mention that it works well and is a great buy.

"...The Tx/Rx LEDs on the serial end are a very nice touch. Well worth the money." Read more

"...This is really sturdy, plenty of cord length. Worth the money." Read more

"...Well worth the money." Read more

"...a RS232 port; this one is the best I have found and the price is very reasonable." Read more

14 customers mention "Connectivity"10 positive4 negative

Customers like the connectivity of the adapter. They say it retains the same COM port even if you unplug it and move it. The ability to save the Com port designation is a great time saver. The fact that it gives you an extra COM Port on the end of a good long length of is super helpful. The retained port ID is very convenient. The fixed-port feature is nice because you can save profiles in secure CRT.

"...It also remembers the COM port." Read more

"Works great so far!! The fact that it retains the same com port number is super helpful... previous prolific models that I have uses would change..." Read more

"It did not work as a serial connection between the radio and computer!!" Read more

"...of some of the extra features this has over others, like remembering COM ports...." Read more

10 customers mention "Driver"7 positive3 negative

Customers like the driver of the adapter. They mention that it's plug and play, and the drivers are already present in Windows. Some are impressed that the driver loaded automatically under Windows 8 Pro and the adaptor worked.

"...No drivers were needed in Windows 10, it was plug and play. It does come with a driver disk if you need it for older OSes...." Read more

"works with Meridian audio equipment, no drivers needed" Read more

"The only con I can think of is that you need to install the driver, other than that, it works great...." Read more

"...that this unit has the dependable FTDI chipset and the drivers are already present in Windows...." Read more

Top reviews from the United States

Amazon Customer
5.0 out of 5 stars Highly recommended
Reviewed in the United States on April 6, 2023
Size: 921.6 Kbps / Null ModemStyle: Null ModemPattern Name: AdapterVerified Purchase
Completely painless to get working under Linux, and works just as expected, operating at standard RS-232 levels (±5V; it is not a TTL serial port). The TX/RX activity LEDs are a great feature, and it supports up to 3000000 baud (3 Mbaud). I have a laptop with integrated serial ports, but this is kind of better, since it gives you visual activity indicators and has a higher maximum speed. If you need to work with older equipment that uses RS-232, this is a great option.
2 people found this helpful
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A. L. Chapman
5.0 out of 5 stars Great all-in-one serial adaptor
Reviewed in the United States on July 3, 2019
Size: 921.6 Kbps / Null ModemStyle: Null ModemPattern Name: AdapterVerified Purchase
Great because it uses FTDI chipset which is very important. Prolific chipsets are not as reliable. Plugged it in my Win10 PC and let Windows deal with it. Said it installed OK but I had to do a driver update in Control Panel Device Manager. I pointed it to the included driver disk's Win10 FTDI folder and it worked great. Next best thing is it has a built in null modem and the correct female DB9 connector so no having to use separate null modem or gender changer. The final plus are the LEDs. The green LED (transmitting to USB end of cable) blinks to let you know data is uploading from the device while an orange one blinks to indicate serial traffic coming to the device on the RS-232 DB9 end. This eliminates another bulky serial port tester and allows for instant visual feedback of serial port activity. Finally, the DB9 has twin thumb screws to secure it to the device to ensure it doesn't come off even if the device is handled. I personally use this to manage my vintage HP 48SX calculator inside an environmental case that has a RS-232 male connector on the outside.
4 people found this helpful
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Phillip Griffith
5.0 out of 5 stars serial console for the PC Engines APU2 router
Reviewed in the United States on April 25, 2023
Size: 921.6 Kbps / Null ModemStyle: Null ModemPattern Name: AdapterVerified Purchase
Works well to connect to the serial console on my PC Engines APU2 router. Linux detected it as /dev/ttyUSB0 without resorting to the driver CD that StarTech ships in the box. sudo grep -i tty syslog. Teklager has a very good description of how to make this connection from Linux using PuTTY.
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Ed Schaller
4.0 out of 5 stars Works well (linux/mac) but we can't trust FTDI any more.
Reviewed in the United States on January 31, 2015
Size: 921.6 Kbps / Null ModemStyle: Null ModemPattern Name: AdapterVerified Purchase
I have been very happy with these. I have used them under both linux and macos. They are very convenient for serial consoles and the like. The blinking LEDs are fun but not needed.

I, in general, have been very pleased with the FTDI chipset that this uses. Recent action by FTDI has demonstrated though that they have a willingness to purposely destroy people equipment in their attempts to stop counterfeiting of their products. They pushed out a driver for windows that purposely rendered counterfeit FTDI chips. The wikipedia page on FTDI has details and links.

I have no reason to suspect that startech doesn't use genuine FTDI chips. It is next to imposable though for me as an end user and without destroying such a product to know if a product using a FTDI driver won't suddenly stop working when it gets plugged into a windows box. With my luck this will happen at the worst time and when I don't have an extra, non-FTDI USB to serial adapter with me.

The net result is that if something claims a FTDI you can't trust it to work when you need it. I was beginning to prefer FTDI's chips and products based on them. Now I cannot trust them.
One person found this helpful
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Eli Lilly
5.0 out of 5 stars Installs fine on Windows 10
Reviewed in the United States on January 1, 2024
Size: 921.6 Kbps / Null ModemStyle: Null ModemPattern Name: AdapterVerified Purchase
On Windows 10 I just plugged it into the computer, which recognized the chip set and installed the driver. Then plugged the DB9 into my device, looked in the device manager to see what port was assigned, and set my device software accordingly. Five minutes max
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M.
5.0 out of 5 stars Worked like a charm!
Reviewed in the United States on February 15, 2022
Size: 921.6 Kbps / Null ModemStyle: Null ModemPattern Name: AdapterVerified Purchase
The CD that came with the cable has nearly every FTDI USB-to-whatever driver known to man included on it. I never once had to connect my PC to the internet to download a driver, just plugged this in and installed the included driver from the CD and had a serial console to my device instantly. The Tx/Rx LEDs on the serial end are a very nice touch. Well worth the money.
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Steven
5.0 out of 5 stars Good reliable UBS to null modem cable
Reviewed in the United States on July 29, 2018
Size: 921.6 Kbps / Null ModemStyle: Null ModemPattern Name: AdapterVerified Purchase
One of the nicest null modem cables I've used. Works flawlessly in Windows 10 off a USB 3 port. I love how it has lights on it so I can confirm rcx and trx signals. I've used this successful to log into a number of network appliance consoles. No drivers were needed in Windows 10, it was plug and play. It does come with a driver disk if you need it for older OSes.

Due not that the DB9 side stick out a little bit further than normal because it has the electronics in it for the USB to Serial conversion, keep that in mind if you have to work in a tight space.
2 people found this helpful
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MMB
5.0 out of 5 stars Quality product from a quality company
Reviewed in the United States on September 2, 2023
Size: 1 PortStyle: USB 2.0Pattern Name: AdapterVerified Purchase
I've been buying products from StarTech for a very long time. Their products are are always high quality and their technical support is excellent, with current manuals and drivers always available online. The USB to Serial Adapter uses industry standard FTDI chipsets and remembers the last serial port number assigned to the device which eliminates searching device manager for determining the port number or resetting the port number.
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Top reviews from other countries

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Nigel W. Johnson
5.0 out of 5 stars First class product
Reviewed in Canada on May 21, 2024
Size: 2 PortStyle: USB 2.0Pattern Name: AdapterVerified Purchase
Solves the problem of separate USB serials ports coming up with different addresses each time - nice to use. Worked fine right out of the box and seems very reliable.
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Nathan
5.0 out of 5 stars Worth the cost
Reviewed in the United Kingdom on May 27, 2024
Size: 1 PortStyle: USB 2.0Pattern Name: AdapterVerified Purchase
Love the product, plugged into the laptop to console into Cisco devices and instantly worked out of the box, no drivers require installing.
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John Savage
5.0 out of 5 stars Worked straight off, very reliable.
Reviewed in the United Kingdom on March 7, 2024
Size: 2 PortStyle: USB 2.0Pattern Name: AdapterVerified Purchase
Replaced a series of similar products all of which were unreliable. Not this one, however - it has worked day and night since installation. Bit expensive, but worth it for lack of hassle.
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Sascha
5.0 out of 5 stars Works fine
Reviewed in the United Kingdom on February 21, 2024
Size: 921.6 Kbps / Null ModemStyle: Null ModemPattern Name: AdapterVerified Purchase
Bought to check if my old ugreen adapter was the cause of my problem... it wasn't, but when i solved the issue i had this adapter worked perfectly with it.
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Anthony R.
5.0 out of 5 stars Nickel
Reviewed in France on January 12, 2024
Size: 921.6 Kbps / Null ModemStyle: Null ModemPattern Name: AdapterVerified Purchase
Un peu cher pour ce que c'est mais comme dhab avec startech très bonne qualité
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