COLAMCO

Black Box Pro Switching System Plus A/B Switch Card, RJ-45 CAT5

$255.69
$223.13 SAVE $32.56
None availableas of 10/17/2026

Ships when available. Free shipping on most items when you spend $100 or more.

Special orders typically ship in 1-12 weeks.

Compliance, certifications and origin

  • TAA compliant
  • Origin: United States
Rated excellent by our customers Read our reviews

Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

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Secure checkoutISO 9001:2015 and CMMC certifiedFamily owned since 1982

Free shipping on most items when you spend $100 or more.

Real people answer: chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.

Overview

About the Black Box Pro Switching System Plus A/B Switch Card, RJ-45 CAT5

The RJ45 CAT5e A/B switch latching card allows for the switching between two Ethernet connections with speeds up to 1 GbE, if power is lost the connection will default to the A location.

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.

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)

Next, 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 Latching (SM978A)
  • CAT6 Latching (SM979A)

This product works with Power Supply (SM961-PS) A/B Switch Cards (SM965A, etc.)

Technical specifications

Technical Specifications of the Black Box Pro Switching System Plus A/B Switch Card, RJ-45 CAT5

General Information

General Information specifications
Manufacturer Black Box Corporation
Manufacturer Part Number SM978A
Manufacturer Website Address http://www.blackbox.com
Brand Name Black Box
Product Name Pro Switching System Plus A/B Switch Card, RJ-45 CAT5
Product Type Expansion Module

Technical Information

Technical Information specifications
Application / Usage Switching Network

Interfaces/Ports

Interfaces/Ports specifications
Total Number of Ports 3
Connector Type RJ-45
Interfaces / Ports Details 3 x RJ-45 LAN

Media & Performance

Media & Performance specifications
Media Type Supported Twisted Pair

Miscellaneous

Miscellaneous specifications
Compatibility Black Box Pro Switching System
Green Compliant Yes
Country of Origin United States
TAA Compliant Yes

Warranty

Warranty specifications
Limited Warranty 1 Year

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Shipping and returns

Free shipping on most items when you spend $100 or more. In-stock items ship on the next open shipment slot. The buy box above shows the live order-by countdown and the estimated arrival date.

Special order item. This item ships direct from the manufacturer and cannot be cancelled once ordered. If you have any questions before ordering, ask us first: chat with us or call 1-800-692-8757.

Questions about shipping or returns? Chat with us, email customerservice@colamco.com, or call 1-800-692-8757, Monday to Friday, 8am to 5pm EST.