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 DB9F/RJ-45,Modular Adapter - Black Color
    Product # 1153
    In Stock This item will ship on 9/24/2018 if ordered within 1 days 7 hours 14 minutes

    Volume Pricing (Log In to see Member Pricing)

    Volume Pricing

    Qty: 1 $0.63
    Qty: 2-9 $0.62
    Qty: 10-19 $0.60
    Qty: 20-49 $0.59
    Qty: 50+ $0.57

    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
    No questions have been asked about this item. Be the first!
    4.3 / 5.0
    13 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Star
    Perfect for my needs
    I purchased these DB9 to RJ45 adapters for integrating Point of Sale cash register systems with my DVR systems. The modular pins work great and are easy to insert into the back of the DB9 pin in any configuration you need.

    PROS: Inexpensive and easy to set up

    CONS: none
    November 9, 2012
    Works like a charm
    We use these adapters to connect an RJ45 serial data connection to a 9 pin serial port.
    Easy to use and even move pins if you configure it incorrectly. The price is great for these. I looked elsewhere online and these are as high as $7+. Monoprice does it right again.

    PROS: Inexpensive, simple to use

    CONS: none
    April 15, 2013
    great little adapter
    Complete and well worth the monies

    PROS: Great price . Not going to find it cheaper elsewhere.

    CONS: Cons - haven't come across one yet .
    October 13, 2012
    Perfect for the Yost wiring method, used at work
    March 24, 2010
    great product
    Beware: get the pins in right the first time. You'll damage them if you try to remove and replace them. This is not a con it means the pins stay in on their own, which is necessary.

    If you need to experiment with the pins, you can carefully plug them into the female DB-9 before placing them in the hood.

    Also helpful are these: 1203 m-f null modem, 1204 f-f null modem, 1184 male-male adapter, 1186 f-f adapter.

    PROS: Eliminates soldering of DB-9 connectors. Easy to use. Standard color-coding of RJ45 pins.

    CONS: The males don't come in black. The females do. What's up with that?
    August 5, 2013
    Worked Perfectly
    These worked perfectly. Always happy to order from Monoprice.
    February 22, 2014
    Great Solution
    I use these for serial/RS-232 control of A/V components when there is distance to the main system.

    PROS: Easy way to deal with serial control of a component that's far away.

    CONS: I had to do a little research on RJ45 serial control to figure out the proper pinout order.
    November 27, 2010
    DB9/RJ-45 Review
    I have a 32-port serial hub that has ethernet connections on the front of the hub. I needed DB9/RJ-45 adapters to connect bluetooth wireless serial port adapters to this hub using ethernet cables. These DB9/RJ-45 adapters are just what I needed. I control my tv, blu-ray player and dvd players with my laptop using bluetooth wireless. I recommend these adapters.

    PROS: Once I figured out the pin configuration between ethernet and DB9, these adapters were easy to use.
    February 20, 2016
    Excellent service
    Product was as ordered. Good quality and prompt delivery. Couldn't ask for anything more.
    June 30, 2018
    3 months ago
    product fine documentation lacking
    The adapter and price (less than 1/10th of C2G) are excellent! Unfortunately I had to use my time to meter the pins to determine the pinout. found that the colors match C2G pinouts. here is what I found on mine

    RJPIN color

    1 blue

    2 orange

    3 black

    4 red

    5 black

    6 yellow

    7 brown

    8 white

    PROS: works, standard parts

    CONS: no wiring diagram with product or on website.
    December 11, 2013