Black Box LGB5128A quick start Connecting to a DC Power Source, Wiring Map for Serial Cable, Page

Chapter 4: Installing the Switch

cable is correctly plugged in.

4.7 Connecting to a DC Power Source

You can plug or remove a DC power cable through the DC terminal block from an external 48-VDC power source.

Figure 4-6. Inserting the DC power cable into the DC terminal block to power on this switch.

Step 1. Insert the DC cable plug directly into the DC terminal block located at the front of the switch.

Step 2. Plug the other end of the cable into an external DC power source.

Step 3. Check the front-panel LEDs as the device is powered on to be sure the POWER LED is lit. If not, check that the power cable is correctly plugged in.

4.8 Wiring Map for Serial Cable

Table 4-2. Serial cable wiring.

NOTE: The switch does not support crossover cable for the console port.

4.9 Fiber Optic SFP+ Devices

An optional 10G SFP+ transceiver can be used for a backbone connection between switches, or for connecting to a high-speed server.

Each single-mode fiber port requires 9-/125-micron single-mode fiber optic cable with an LC connector at both ends. Each multimode fiber optic port requires 50-/125- or 62.5-/125-micron multimode fiber optic cabling with an LC connector at both ends.

WARNING: This switch uses lasers to transmit signals over fiber optic cable. Never look directly at a transmit port when it is

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