IBM 4910-33D Installation Guide - Page 19

Product introduction, This LED indicates HDD activity.

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March 2009 Product introduction Figure 2. Front view of 4810/4910 system unit These are the descriptions of the indicators that are on the front cover: This indicates a standard USB port. This LED indicates HDD activity. This LED indicates the 4810 power state. Hold down the power button for 4 seconds to power off. Table 5. LED operation System state Off (No AC supplied) Off (AC supplied) (Note: this state can be entered by holding the power button down for at least 4 seconds) On (POST) On (Normal operation after post '8B'h) S1 (Standby) S3 (Suspend to RAM) LED state or operation OFF Blip (0.25 second ON, 1.75 seconds OFF) Blinking (0.5 second ON, 0.5 second OFF) ON Blinking (0.5 second ON, 0.5 second OFF) Blinking (0.5 second ON, 0.5 second OFF) Chapter 1. Introduction 5

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These are the descriptions of the indicators that are on the front cover:
This indicates a standard USB port.
This LED indicates HDD activity.
This LED indicates the 4810 power state. Hold down the power
button for 4 seconds to power off.
Table 5. LED operation
System state
LED state or operation
Off (No AC supplied)
OFF
Off (AC supplied) (Note: this state can be
entered by holding the power button down
for at least 4 seconds)
Blip (0.25 second ON, 1.75 seconds OFF)
On (POST)
Blinking (0.5 second ON, 0.5 second OFF)
On (Normal operation after post '8B'h)
ON
S1 (Standby)
Blinking (0.5 second ON, 0.5 second OFF)
S3 (Suspend to RAM)
Blinking (0.5 second ON, 0.5 second OFF)
Figure 2. Front view of 4810/4910 system unit
Product introduction
March 2009
Chapter 1. Introduction
5