If you are visually impaired and are having difficulty navigating this site, please call our Customer Support line via our toll free number 1 (877) 271-2592.
    Monoprice DB9, F/F, Null Modem Mini Type
    Product # 1204
    In Stock This item should ship tomorrow (9/26/2018) if ordered within 18 hours 33 minutes

    Volume Pricing (Log In to see Member Pricing)

    Volume Pricing

    Qty: 1 $1.47
    Qty: 2-9 $1.44
    Qty: 10-19 $1.41
    Qty: 20-49 $1.38
    Qty: 50+ $1.32

    To see and take advantage of our member pricing sign up for a business account or contact our sales team.

    Learn more about Monoprice Business


    Start typing your question and we'll check if it was already asked and answered. Learn More
    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
    4.3 / 5.0
    12 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Star
    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
    great adapter
    great adapter, low cost. these are helpful when switching RS232 devices!
    April 13, 2018
    7 months ago
    Online X-Border Shopping Made Easy!
    Nice to find a Null-Modem adapter that's also a gender changer and a mini (slim) all rolled into one!
    Serial is far from dead. Still need DB9 items such as this.
    Thanks for accepting ALL CREDIT CARDS!
    March 1, 2018
    7 months ago
    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
    Simple, but Elegant
    It works, cheapest place I could find it at. I had to take the screw standoff things to use it, but it works fine.
    February 21, 2018
    7 months ago

    Related Categories