IBM BladeCenter HT 8740 Problem Determination And Service Manual page 34

Rear view
This section identifies the components, connectors, and LEDs on the rear of the
BladeCenter HT unit.
The following illustration shows a BladeCenter HT Type 8740 with dc-power
connections.
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BladeCenter HT Type 8740 and 8750: Problem Determination and Service Guide
– Minor system fault: When this amber LED is lit, the BladeCenter HT unit has
a minor system fault. The system can continue to operate, usually without
noticeable loss of functionality or performance.
– Media tray fault: When this amber LED is lit, there is a fault on the media
tray. The system can continue to operate, usually without the use of the
components on the media tray.
– USB connectors: Use these connectors to attach USB v2.0, or earlier,
compatible devices with 2.5 m (8.2 ft.) cables.