These guides will take you step by step through the safe removal of what are considered to be the Customer Replaceable Unit (CRU) parts of the Various OptiPlex 780 systems. (CRUs are the parts of the system that shouldn't need an engineer to remove or replace.)
The guides will also include pictures to reference what's involved.
If these guides do not cover what you are looking to do, then you will want to reference your System Manual.
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