Black Box 1-800-316-7107 


Helping you is our priority at Black Box.

We're committed to providing the best customer service in the industry. We're here for you, 24/7, 365.

We'll call you

A technical expert will call you shortly.

Submit Connecting call...

Call Us

Customer Sales & Service Support

Black Box Brand Product Support

IT Services & Voice Support

Send us a FAX


Pro Switching Gang switch 4U 75 ohm video F-Connector A/B card non-latching

Switch between two 75 ohm F-Connector video connections


Limited Quantity In Stock
Typically Ships within One Week
Extended Double Diamond™ Warranty Available (3 Additional Year)

*Required field

Product Features

  • Provides A/B switching for video F-connectors.
  • Use with Pro Switching System Plus Chassis.


The 75 ohm F-Connector video A/B card non-latching allows you to switch between two video cconnections if power is lost the switch will default to the A connection. Controller Cards take up only one slot, and external power connects to the controller card, One slot is reserved for future use, leaving you with 16 slots for A/B Switch Cards. All switch cards take up one slot except for the power A/B cards which take up two slots. Manage access to networks, implement backup systems for network and computer connections or share peripherals and other equipment. Local features include LED status and manual switching. Remote control (dry contact closure, RS232 and Ethernet) provides unmatched management flexibility. Gang Switch systems are used around the world to add secure access control and reliable backup for critical systems from space launch centers to stock exchange networks. Ordering instructions First, order the chassis... Gang Switch, 4U, 18-Card (SM960A) Next order at least one power supply (order two for redundancy)… External Power Supply 100- 240 VAC (SM961-PS) Internal Power Supply -48 VDC (SM760-PS1) Internal Power Supply Dual -48VDC (SM760-PS2) then select a Controller Card... Ethernet (SNMP) (SM962A) Logic Only (SM964A) choose your A/B Switch Cards... Serial DBxx : DB25 A/B Non-Latching (SM965A) DB9 A/B Non-Latching (SM966A) DB15 A/B Non-Latching (SM967A) Power: 240 VAC 1 in 2 out (SM971) 120 VAC 2 in 1 out (SM973) Video: 75 ohm F-Connector (SM976A) Multimode: SC Latching (SM977A-SC) ST Latching (SM977A-ST) RJ45 Copper: CAT5e Non-Latching (SM978A) CAT6 Non-Latching (SM979A) This product works with: Power Supply (SM961-PS) A/B Switch Cards (SM965A, etc.)

Tech Specs

CE Approval Yes
Indicators (2) LEDs (A and B)

* 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

Extended 1 Year Warranty Available

Protect your purchase with an additional 1 Year Double Diamond™ warranty!
Cost: $22.46

Extended 3 Year Warranty Available

Protect your purchase with an additional 3 Year Double Diamond™ warranty!
Cost: $44.91


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 Gang Switch 4U 75 ohm video F-Connector A/B Card Non-Latching 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.