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    DB9, F/F, Null Modem Mini Type
    Product # 1204
    In Stock This item should ship today (1/23/2018) if ordered within 9 hours 41 minutes

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    DB9, F/F, Null Modem Mini Type

    RS-232, DB 9 pin male to male null modem.

    Null modems are used to connect two computers or other devices together to achieve file transfer. Null modem connectors are different from straight through connectors because the receive and transmit conductors are crossed.

    This is a miniature null modem with female connectors on each side.

    *Monoprice continually strives to improve its product line to bring our customers the best products available. Therefore, changes may be made to listed specifications without prior notice. Item received may not match photo or specs shown

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    Browse 1 question Browse 1 question and 1 answer
    Can someone please post a pinout for this adapter?
    A shopper on Apr 11, 2017
    BEST ANSWER: Hello, thank you for your inquiry. While we do strive to include all measurements and diagrams on the product page, if there is a specific measurement you are looking for, please reach out to our tech support team via these methods here:


    Our knowledgeable Technical Support staff would be more than happy to assist.

    Thank you
    4.1 / 5.0
    9 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    Room for improvement
    Should definitely come with the double-ended female attachment fittings like 1186 does. Whenever you connect two male connectors together with a f/f adapter you need those. I can't understand why item 1186 has them and this doesn't. For every 1204 I buy, I need to also buy an 1186.

    PROS: Great piece, small as possible, well labeled, does what it's designed to.

    CONS: Missing the double-female attachment ferrules
    September 6, 2015
    just what you need
    Fits almost anywhere it couldn't be any smaller. Does what it says: reverses transmit/receive pins. Handy to have for testing: if your device doesn't respond without one, insert this and if it works, leave it there.

    If you work with DB-9 RS-232 regularly, just order 10 of these to keep on hand - they're cheap and don't take up much storage space. I've had a hard time finding them elsewhere, and Monoprice has gone out of stock, so get them while you can.

    PROS: as compact as possible, cheap, works

    CONS: none
    May 23, 2012

    PROS: Perfect at a perfect price!

    CONS: None
    April 19, 2011
    I got this to work with a USB to RS-232 adapter that had a DB9M connector to connect to a VME Single-board computer's console port. It does the job and doesn't take up any extra space.

    PROS: Simple, compact and it works.

    CONS: None that I could see.
    June 13, 2014
    DB 9 Null Modem adapter
    Great Experience buying from these folks. Will definitely use them again in the future.

    PROS: Exactly as advertised, quality product, Quick delvery

    CONS: None
    June 30, 2015
    Tiny cable converter
    This simple and small device reverses the necessary pins to convert DB9 into a null modem cable. Does the job as expected and required.

    PROS: Small and solid construction

    CONS: none observed
    March 15, 2014
    Works as expected great price on time delivery from MonoPrice

    PROS: Great price on time delivery from MonoPrice

    CONS: None
    September 10, 2013
    I have commanded a DB9, F/F, Null Modem Mini Type not a M/M... (to refering at the last review).
    July 11, 2008
    Not the good product!!!
    I have commanded a DB9, M/M, Null Modem Mini Type and i have receive a DB9 monitor to an HDB15 adapter!!!

    I dont understand but its not the good product, im forced to command an other null modem...

    Bad, Bad, Bad....
    July 11, 2008

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    In Stock This item should ship today (1/23/2018) if ordered within 9 hours 41 minutes