Dell PowerEdge HR675 Hardware Owner's Manual page 132

5 Replace the memory modules in the same sockets from which they were
removed (see "Installing Memory Modules" on page 113).
6 Replace the internal USB memory key, if applicable (see "Installing the
Optional Internal USB Memory Key" on page 105).
7 Replace the SAS controller card, if applicable (see "Installing a SAS
Controller Card" on page 98).
8 Replace the RAC card, if applicable (see "Installing a RAC Card" on
page 104).
9 Replace all expansion cards that you removed and any attached cables (see
"Installing an Expansion Card" on page 95).
10 Replace any cables that you removed from the system board.
11 Replace the processor airflow shroud (see "Installing the Processor Airflow
Shroud" on page 72).
12 Replace the system cover (see "Installing the System Cover" on page 67).
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Installing System Components