Lenovo ThinkCentre M91 - Manual (Page 49)

The following table lists the CRU information for the following machine types:
4468, 4473, 4476, 4479, 4495, 4497, 4499, 4504, 4513, 4517, 4524, 7021, 7032,
7034, 7049, 7052, 7053, 7073, 7136, and 7178.
Self-service CRUs Optional-service CRUs
Battery Card reader
Front fan assembly Front audio and USB assembly
Hard disk drive Heat sink and fan assembly
Keyboard Internal speaker (optional)
Memory module Microprocessor
Mouse Optical drive
Peripheral Component Interconnect
(PCI) card
Power supply assembly
Rear fan assembly
Chapter 6. Customer Replaceable Units (CRUs)
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