Sony PCV-RX540 - Vaio Desktop Computer System Reference Manual page 56

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VAIO Digital Studio System Reference Manual
6
Slide the drive holder up and out.
7
Slide the new drive into the bottom part of the drive holder and align
the holes on each side of the drive holder.
8
Secure the drive to the drive holder using screws in each of the two
holes on each side of the drive holder (screws are provided with the
new drive). Do not overtighten the screws.