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Non-Powered Modem-Sharing Device (NPMS)

Eliminate the cost of extra modems and communication ports.

Price: $252.45

Sold As is with no warranty.

Product Features

  • Active port contention.
  • Derives power from the data and handshaking signals of the attached RS-232 device.
  • Transparent in sync or async environments.
  • Straightforward and simple installation with no tuning or strapping required.
  • Details

    This data-sharing device is more than just a splitter. It gives you active port contention, draws power from the RS-232 line, is data-transparent in sync or async environments, and supports speeds up to 19.2 kbps.

    The Non-Powered Modem-Sharing Device (NPMS) shares one modem over two terminals. There's nothing to set— just make the connection and start sharing!

    Tech Specs

    Contention Type Control (RTS) signal
    CE Approval Yes
    Interface RS-232
    Connectors (1) DB25 M (modem), (2) DB25 F (port)
    Size 1"H x 2"W x 5"D (2.5 x 5.1 x 12.7 cm)
    Weight 0.3 lb. (0.1 kg)
    This product works with:
    • Extended-Distance Data Cable (EDN16T, EDN16C)
    Questions? Contact our FREE Tech Support.

    NOTE: Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 877-877-2269.


    Double Diamond Warranty Sold As is with no warranty. Diamond

    Double Diamond™ Warranty (Standard)

    Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

    The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

    During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

    Plus, get an Extended Double Diamond Warranty.

    You can also extend your warranty or protect a previously purchased Black Box® brand product** for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

    Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

    * Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

    What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.