IBM System x3550 M4 Installation And Service Guide

The following illustration shows the light path diagnostics panel.
Note any LEDs that are lit, and then reinstall the light path diagnostics panel in
the server.
v Remind button: Press this button to place the system-error LED/check log
LED on the front information panel into Remind mode. By placing the
system-error LED indicator in Remind mode, you acknowledge that you are
aware of the last failure but will not take immediate action to correct the
problem. In Remind mode, the system-error LED flashes every 2 seconds
until one of the following conditions occurs:
Figure 86. Light path diagnostics panel disengagement
Figure 87. Light path diagnostics panel
Chapter 4. Troubleshooting 135

IBM System x3550 M4 Specifications

General

Processor	Intel Xeon E5-2600 series
Chipset	Intel C600 series
Memory	Up to 768 GB
Storage	Up to 8 x 2.5" hot-swap drives
Form Factor	1U rack
Power Supply	750 W AC
Network Interface	4 x 1 GbE
RAID Support	RAID 0, 1, 10
Expansion Slots	3 x PCIe 3.0 slots
Operating System Support	Windows Server, RHEL, SUSE, VMware
Management	Integrated Management Module II (IMM2)