IBM x3400 7975 - Internal Connectors, Leds, and Switches; System-Board Internal Connectors

Internal connectors, LEDs, and switches
The following illustrations show the connectors, light-emitting diodes (LEDs), and
switches on the system board. The illustrations might differ slightly from your
hardware.
System-board internal connectors
The following illustration shows the internal connectors on the system board.
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DIMM LEDs
Main power
Power Power
Front panel
USB tape
Primary IDE
Front USB
Microprocessor 1
Microprocessor 2
SAS/SATA backplane 1
power
Simple-swap SATA backplate
SAS/SATA backplane 2
power
Hot-swap SAS/SATA 1
signal
Hot-swap SAS/SATA 2
signal
Hot-swap main fan
Hot-swap fan
(redundant)
BatteryWake on LAN
Rear fan
COM 2
header
Chapter 1. Introduction 11