Black Box Pro Switching System Plus A/B Switch Card, DB9

Black Box Pro Switching System Plus A/B Switch Card, DB9

The DB9 A/B switch latching card allows you to switch between two DB9 connections. If power is lost the connection will retain its connected state. 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)

Next, choose your A/B Switch Cards

• Serial DBxx: DB25 A/B Latching (SM965A)
• DB9 A/B Latching (SM966A)
• DB15 A/B 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.)

• no jumpers or switch settings that need to be configured on the A/B Switch Cards


• Occupies one slot


• Latching will retain its connected state if power is lost


• Supports switching of all DB9 leads