Your cart is empty.
Your cart is empty.The NM9FF Null Modem Adapter features two DB9 female connectors - a cost-saving way to convert a straight through cable into a null modem cable..
Ulices Meza
Reviewed in Mexico on February 1, 2020
Es funcional y se ve de calidad.
Paolo B.
Reviewed in Italy on November 9, 2020
Funziona benissimo, molto utile e ben realizzato. Personalmente trovo ottimo il rapporto qualità prezzo.
MARROU
Reviewed in France on November 29, 2020
Véritable adaptateur "NULL MODEM" ou "CROSSED", toutes les broches sont câblées.
Kenneth
Reviewed in the United States on January 22, 2020
I won't lie. I bought this on a whim to see how it'd compare to its Monoprice-manufactured counterpart, and frankly I'm not impressed.Sure, it'll do the job in a simple configuration where swapping TX/RX pins is sufficient, but as another reviewer pointed out, pins 1 and 9 are wired straight through as opposed to 4 & 6 (opposing side) and disconnected, respectively. Will it make a difference in most applications? Probably not, but me? I'd rather just "buy once - cry once."You might also be fooled into thinking the thumbscrews are a redeeming quality, but sadly they're not. In fact, the threads are just barely long enough to screw into 4-40 female standoffs. Sometimes, folks, a silly millimeter CAN make all the difference in the world.My honest opinion? Heed the warnings of other reviewers and purchase a Monoprice 101137 instead, and get used to pulling out your "tweaker" every time you need to install and uninstall it. Ironically, the aforementioned alternative is cheaper than StarTech's offering by about 80 cents. Go figure. 9_9Three stars. Meh.Pinouts for the really curious:1 -> 12 -> 33 -> 24 -> 65 -> 56 -> 47 -> 88 -> 79 -> 9
Tobias
Reviewed in Germany on March 1, 2018
Der Crossover Adapter tut was er soll. Ich verwende ihn primär zur Wartung von PCEngines APUs und Fujitsu Futro Thin-Clients.
Chris
Reviewed in the United States on August 15, 2017
Used this in conjunction with a USB to serial adapter to figure out what commands an integration system was sending over RS232. Worked great.
Treestem
Reviewed in the United States on February 7, 2017
These are rugged, well constructed units, just like you expect from StarTech. Personally, I find these units to be fun for the whole family!
Antonio
Reviewed in Spain on June 15, 2016
Que se puede decir de este producto. Realmente el funcionamiento es simple. Funciona correctamente y la calidad de fabricación es buena. Estoy contento y el cliente para el que se lo compré no se ha quejado así que cumple con su cometido. Y eso que el cliente es un imbécil de mucho cuidado.
David Scott
Reviewed in the United States on May 16, 2014
I keep one of these with me in a bag you never know when you might run into a router or switch with a DB9 console port.It works and it's a good insurance policy. (This assumes you also have a DB9 to USB adapter with you as well)What I keep with me(1) StarTech DB9 RS232 Serial Null Modem Adapter - F/F(2) StarTech.com 10-Feet DB9 RS232 Serial Null Modem Cable(3) Plugable USB to RS-232 DB9 Serial Adapter
Jeffrey A. Hensley
Reviewed in the United States on July 28, 2013
These are easy enough to make on your own, but having a pre-made one handy is worth the purchase price. This simple cross over connector works as expected when directly interfacing two serial ports.
Nols
Reviewed in the United States on September 24, 2012
It works. What more can I say? it is an eggshell color, made of hard plastic and has four finger screws on it. Because it is a female 9 pin on both sides it has 18 total holes in it.(Reviews must contain at least 20 words about the product)
Jason
Reviewed in the United States on December 10, 2012
No problems. Simple connector. No problems with install. Device I connected to found it with no problems. Didn't even need the driver CD.
TIMOTHY W BRATCHER
Reviewed in the United States on June 1, 2011
It's just a null modem adapter, but it was well priced and works just as it should. It came with some stand-offs, but I didn't need them. I needed it to join two USB to DB9 serial adapters, where one port is used for the main program and the other is an emulator of what's on the other end of the cable, like a local loop-back.
Recommended Products
$10.19
$ 4 .99 $4.99