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Extreme Networks BlackDiamond 10808 Installation Guide Page 69

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Power Supply Controller Overview
Extreme Networks BlackDiamond 10K-Series Switch Installation Guide 69
Power Supply Controller Overview
The BlackDiamond 10808 switch includes two power supply controllers, located in the back of the
chassis, that collect data from the installed power supplies and report the results to the MSM modules
via an I
2
C interface.
When the BlackDiamond 10808 switch is first powered on, the power supply controllers enable the
power supplies by providing 48Vpower. The power supply controller also detects and reports
incompatible combinations of power suppy types and line voltage feeds, and disables the power supply
if an unsafe condition arises.
Two power supply controllers installed in the BlackDiamond 10808 switch provide master/slave
redundancy in the case that one of the controllers fails or is removed. At least one power supply
controller must be installed.
CAUTION
Do not reach into the power supply controller access area when power is on.
Figure 22 shows the front panel of the power supply controller.
Figure 22: Power supply controller front panel
NOTE
The RJ-45 port on the power supply controller should not be used as an Ethernet port.
EX_018
Module status LEDs
PoE power control port
with status LEDs
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