IBM System x3550 M4 Installation And Service Guide

System-board LEDs
The following illustration shows the light-emitting diodes (LEDs) on the system
board.
System-board optional-device connectors
The following illustration shows the connectors on the system board for the
optional devices.
Figure 18. System-board LEDs
32 IBM System x3550 M4 Type 7914: Installation and Service Guide

IBM System x3550 M4 Specifications

General

Brand	IBM
Model	System x3550 M4
Category	Server
Language	English