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Expansion Unit System Unit Locations
Description of the Disk Expansion Unit
The disk expansion unit is used to increase the number of media devices and/or disk drives.
All hardware components inside the disk expansion unit are accessible from the left side
after having removed the unit covers.
Rear Fan
Disk Drives
From the left side of the disk expansion unit, the following modules are accessible:
Up to two 5.25-inch half height media devices (optional). Up to two 3.5-inch half height
disk drive can be installed instead.
The operator panel (mandatory)
The key mode switch (mandatory)
The ECB card (mandatory)
Up to two disk drives (optional) in the bottom tray
Up to two disk drives (optional) in the upper tray
One external cooling fan (mandatory)
The power supply (mandatory).
1-6
Service Guide
Power Supply
Media Devices
or Disk Drives
Key Mode Switch
Operator Panel
ECB Card
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