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Lockable DB9 Switches, (3) Female  

Rugged, versatile, guaranteed for life—and a key lock for security.


LIFETIME DoubleDiamond™ Warranty (Standard)

Product Highlights

  • Share printers, modems, or other peripherals.
  • Tested to 25,000 use-cycles to ensure reliability.
  • Guaranteed for life!

  • Further Details

    Space is at a premium for all businesses today. You might have to place your equipment in areas that are readily accessible to unauthorized staff.

    You've spent thousands of dollars on hardware and software to keep your precious data safe and secure. Then someone flips a cheap manual switch from A to B, and your data and connection are lost before you know it.

    But if you use a lockable switch from Black Box, no one can tamper with your switch connection. So, whether you're protecting your data from malicious intruders or good-intentioned "helpers," our lockable switches are an affordable solution, and they're guaranteed for life.

    Leads Supported All 9 leads switched straight through
    MTBF 25,000 cycles
    Relative Humidity Up to 95%, noncondensing
    Temperature Tolerance Operating: 32 to 114° F (0 to 45° C);
    Storage: -40 to +176° F (-40 to +80° C)
    Connectors SW034A-FFF: (3) DB9 F;
    SW034A-MMF: (2) DB9 M, (1) DB9 F
    Size Chassis style B: 3.5"H x 6"W x 6.3"D (8.9 x 15.2 x 16 cm)
    Weight 1.5 lb. (0.7 kg)
    NOTE: Remember to specify connector gender when ordering.

    These products work with:
  • DB9 Extension Cable with EMI/RFI Hoods, Male/Female (EDN12H-MF)
    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 1-800-316-7107.

  • Accessory: EDN12H-0025-MF

    DB9 Extension Cable with EMI/RFI Hoods, Beige, Male/Female, 25-ft. (7.6-m)

    DB9 Extension Cable with EMI/RFI Hoods, Beige, Male/Female, 25-ft. (7.6-m)

    Accessory: SW020A-FFF

    ABC (2 to 1) Lockable (Key Operated) Switch, Chassis Style B, DB25, (3) Female

    ABC (2 to 1) Lockable (Key Operated) Switch, Chassis Style B, DB25, (3) Female

    Double Diamond Warranty
    LIFETIME DoubleDiamond™ Warranty (Standard)

    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.

    The Lockable DB9 Switches, (3) Female comes with a standard Lifetime warranty already included.

    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.

    Product SKU Price Quantity
    ABC (2 to 1) Lockable (Key Operated) Switch, Chassis Style B, DB9, (2) Male, (1) Female SW034A-MMF $148.45
    You can find this product in the following subcategory(s)

    Add to Cart

    Price: $148.45

    On Back Order




    Please Note: Once ordered, this product cannot be cancelled or returned for credit.

    Shipping Info

    Weight: 1.452 lbs.
    HxWxD: 0 x 0 x 0 in.

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