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Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.
Black Box SM966A 4U DB9 A/B Switch Card Latching
Overview
The Black Box SM966A is a 4U rack-mountable DB9 A/B switch card designed for environments requiring reliable manual switching between two sets of serial devices or interfaces. Its latching mechanism ensures that the selected connection remains engaged until manually switched, preventing accidental disconnections. This card is ideal for IT infrastructure, network closets, and server rooms where managing multiple serial connections to equipment like KVM switches, modems, or diagnostic tools is critical.
Compatibility
This A/B switch card is designed for DB9 serial interfaces. It is compatible with any system or device that utilizes standard DB9 serial ports, including many rackmount servers, network attached storage (NAS) devices, industrial control systems, and legacy networking equipment. The SM966A functions as a passive switch, meaning it does not require external power and is compatible across various operating systems and hardware platforms that support DB9 connectivity.
Installation Notes
Installation involves mounting the SM966A card into a standard 4U rack chassis or enclosure. Connections are made via standard DB9 female connectors on the front panel for the two selectable interfaces (A and B) and the common port. The physical switch lever on the front panel is used to select between the A and B positions. Ensure adequate clearance within the rack for the card and its connected cabling.
What's in the Box
- 1x Black Box SM966A 4U DB9 A/B Switch Card Latching
Black Box 4U DB9 A/B Switch Card Latching - SM966A
Build Your Complete System
Manufacturer-verified compatible cameras, recorders, mounts, accessories, and licenses for this product. Adjust quantities and add the entire bundle to your cart in one click.
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