You can find the CRU information in the ThinkStation Hardware Installation and
Replacement Guide for the following machine types: 4105, 4157, and 4217.
Self-service CRUs
Optional-service CRUs
Diskette drive or card reader
Battery
Hard disk drive
Front panel connector assembly
Keyboard
Heat sink
Memory module
Internal speaker
Mouse
Power supply assembly
Optical drive
System fan assemblies (front and rear)
Peripheral Component Interconnect
(PCI) card
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ThinkStation Safety and Warranty Guide