Dell OptiPlex 390 (Mid 2011) - Manual (Page 21)

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Hard Drive
Removing the Hard Drive
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the cover .
3. Remove the data cable and power cable from the back of the hard drive.
4. Press the hard-drive bracket latch towards the hard drive and lift it upward.
5. Flex the hard-drive bracket and then remove the single 3.5 inch hard drive
or two 2.5 inch hard drives from the bracket.
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