Hitachi Compute Blade 2500 - Appearance of the power supply module

There are two LEDs beside the connector slot.
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The LED on the upper left(TX/RX) lights up green when a link to the
network is established.
The LED flashes green when the port is communicating via the
network.
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The LED on the upper right(ALM) lights up yellow when a failure
occurs on the port.
6. Mini USB port
This port connects USB devices used for management. This port accepts
external PC via cables, which can control this switch module.
7. Ethernet port
This port is LAN port for Ethernet.
There are two LEDs beside the connector slot.
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The LED on the upper left(TX/RX) lights up green when a link to the
network is established.
The LED flashes green when the port is communicating via the
network.
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The LED on the upper right(ALM) lights up green when the
communication speed of the port is 100 Mbps or 1000 Mbps. This LED
stays off when the communication speed of the port is 10 Mbps.
Appearance of the power supply module
The power supply module has a connector for connecting the AC power cable,
as well as indicators to show the status of the power supply module itself.
The appearance of the power supply module is shown below.
Figure 2-29 Power supply module
The connectors and indicators of the power supply module are described
below.
Figure 2-30 Power supply module connector and indicators
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CB 2500 Appearance
Hitachi Compute Blade 2500 Series Getting Started Guide