Lenovo RD540 manual Intelligent Diagnostics Module, Front USB connector

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Front USB connector 1

Front USB connector 2

Used to attach a USB-compatible device, such as a USB keyboard, mouse, scanner, or printer. If you have more than six USB devices, you can purchase a USB hub, which you can use to connect additional USB devices.

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Front VGA DB-15 connector (available in some models)

Used to attach a VGA-compatible video device, such as a VGA monitor.

Intelligent Diagnostics Module

This topic provides information about the Intelligent Diagnostics Module (hereinafter referred to as the IDM) and the diagnostic LEDs on the module. Many errors are first indicated by a lit error LED on the diagnostic panel of the server. If an LED is lit, one or more LEDs elsewhere in the server might also be lit to direct you to the source of the error. See “System board LEDs” on page 46.

The following illustration shows the location of the IDM and the diagnostic LEDs on the IDM panel in the front of the server. Depending on the model, your server might look slightly different from the illustrations in this topic.

PSU Mem CPU

PSU Mem CPU

Figure 12. IDM panel

	LED	Status	Description	Action
	Power supply error	Solid off	The power supply is working
1
LED			correctly.
		Solid on (amber)	The power supply is likely to fail	Check the BMC for errors and
			or has failed.	run the diagnostic programs. See
				“Using a diagnostic program” on
				page 160.
				Note: To identify the failing power
				supply, check the status LED
				near the power cord connector
				on the redundant power supply.

Chapter 3. Product overview 21