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Automatic Switching System Chassis

Specify a system for full local and remote switching control for up to 2048 ports!


Please call 877-877-2269 for a replacement product or part.
Extended Double Diamond™ Warranty Available (3 Additional Year)


  • Great for maintenance! When your primary system’s ports need attention, simply switch to alternate lines.
  • Holds up to 16 optional interface cards.
  • Optional Application Configuration Software works with the SM533-C and SM534-C cards (sold separately) to give you switching control of one or more systems remotely via a Web connection.
  • Use the software's GUI to name all chassis and ports, view all connections, and check their status in real time while performing basic and user-defined switch operations.
  • Redundant power supply options available for mission-critical applications.

    The BLACK BOX® Automatic Switching System gives you individual and full gang switching control without the expense of a fully automated network management system.

    A typical Automatic Switching System includes a rackmount chassis, a control card, 1 or 2 power supplies, and up to 16 switching interface cards (cards are sold separately). With our large selection of cards, you can change systems easily—simply pop in a different card. It’s that simple! Mix and match the cards in any variety you need.

    We've designed the system for easy setup. The hot-swappable cards plug right into the back of the chassis. There are no wires to disconnect, and you don’t have to power down to make changes to the system.

    If 16 cards aren’t enough, it’s time to daisychain! You can link up to 64 Automatic Switching System chassis—that’s up to 2048 switching channels under 1 controller! And using the Automatic Rack Chassis Configuration Software (also sold separately), you can control groups within one or more Automatic Rack Chassis systems with point-and-click ease from a Windows® PC.

    We also offer Web Browser, SNMP, ASCII, and Manual (Local) Control Cards in our list of options, so you can add industry-standard management, too. These cards enable you to manage the system from a remote PC connected to it through the RS-232 port, a LAN (10/100), and the Web.

    Most recently, we've expanded the Automatic Switching System family to include the SVGA Video Card, which supports high-resolution video.

  • Tech Specs

    CE Approval Yes
    Interface Via optional switching system cards:Digital: RS-232/V.24, V.35, X.21/X.25, T1/T2; Analog: RJ-11, RJ-45; Coax: BNC, twinax
    Size 7"H (4U) x 19"W x 6.5"D (17.8 x 48.3 x 16.5 cm)
    Weight 12 lb. (5.4 kg) fully populated
    NOTE: The optional Dual Redundant Power Supply (SM535A) is a single power supply that provides redundant power for up to eight connected chassis. In this type of daisychain configuration, it attaches to the master chassis.

    This product works with:
  • Automatic Switching System Control Cards for Manual Local Control (SM531-C–SM532-C)
  • Automatic Switching System Control Cards for Web Browser, SNMP, ASCII, and Manual Local Control (SM533-C–SM534-C)
  • Automatic Switching System Configuration Software (SM540A)
  • Automatic Switching System Power Supplies (SM514A-PS, SM514A-PS-E) and Automatic Switching System Dual Redundant Power Supply (SM535A)
  • Automatic Switching System Cards, including:
    — AB V.35 Conductor (21 Leads) Card (SM501-C)
    — AB RS-232 Conductor (25 Leads) Cards (SM503-C, SM503-C-FM)
    — AB Coax BNC 100-Mbps Card (SM504-C)
    — AB Twinaxial Card (SM505-C)
    — AB Double Coax 100-Mbps Card (SM507-C)
    — AB RJ-11 (4-Wire) Card (SM508-C)
    — AB Dual RJ-11 (4-Wire) Card (SM508-C-2)
    — AB RJ-45 (8-Wire) Card (SM509-C)
    — AB Dual RJ-45 (8-Wire) Card (SM509-C-2)
    — AB DB9 Card (SM511-C)
    — AB DB15 Card (SM512-C)
    — SVGA (HD15) Video Card (SM530-C)
  • Automatic Switching System Blank Panel (SM518)
    Questions? Contact our FREE Tech Support.

    * 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.

  • Support


    Double Diamond Warranty

    Extended 1 Year Warranty Available

    Protect your purchase with an additional 1 Year Double Diamond™ warranty!
    Cost: $50.37

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $100.73


    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 Automatic Switching System Chassis comes with a standard 1 Year Double Diamond™ Warranty (Standard) 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.