DB9, M/F, Null Modem Mini Type
    Product # 1203
    DB9, M/F, Null Modem Mini Type
    Product # 1203
    $1.27
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    DB9, M/F, Null Modem Mini Type

    RS-232, DB 9 pin male to female 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 a male connector on one side and a female on the other.


    *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

    11 Reviews

    100% of the reviewers recommend this product

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    Excellent Adapter!

    • Kenneth Buchholz,
    •  Charlottesville, VA 
    • 8/21/2015 7:39:52 AM

    Pros: Thin profile means less protrusion from the socket & therefore less chance for accidental bumping/damage
    Less bulkier than other null-modem adapters (reduces shipping costs)

    Cons: None

    I sell connectivity kits for the vintage Apple II family of computers to connect Apple II computers to PCs and Macs, By bundling this connector with a standard serial cable, the customer gets multiple usage from the kit. They don't need to have one serial cable and one null-modem cable, thus reducing cable clutter. Customers prefer this thin adapter over the bulkier, larger adapters.

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    One Trick Pony

    • Mmmbacon,
    •  Dallas, TX 
    • 3/27/2015 7:12:47 AM

    Pros: Well built, very cost effective, and does what it says it will do....

    If the one trick the pony knows is talking, then it's a pretty good one trick. Thats how I see this DB9 adapter. Doesn't do a wide variety of things, but the one it does, it does it well. I had bought some serial cables instead of ordering the null modem cables like I knew I should. These little connectors come to the rescue. They work as intended and a well built. Ya gotta have on of these in your toolkit...

    I would/will purchase these again.

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    Worked Great

    • Jason,
    •  Clymer, NY 
    • 10/28/2014 5:09:42 PM

    Pros: Small, simple, solid construction.

    Cons: None.

    A great adapter when you're not sure if server equipment is expecting a standard or null-modem serial cable. Solid construction and worked fine for me. The provided screws were easily removed which allowed me to connect it to the cable I had.

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    • markwho,
    •  AMARILLO, TX 
    • 5/22/2014 1:35:29 PM

    Pros: Great little parts to keep in service vehicles. They work great.

    Cons: None

    We keep these in our service vehicles. Don't know how many times they have saved my a$$.

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    Tiny cable converter

    • Spyder,
    •  Fort Langley, BC 
    • 3/15/2014 2:18:02 PM

    Pros: Small and solid construction

    Cons: none observed

    This simple and small device reverses the necessary pins to convert DB9 into a null modem cable. Does the job as expected and required.

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