Dell Inspiron Small Desktop (3646, Mid 2014) - Manual (Page 47)

Replacing the Coin-Cell
Battery
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before Working Inside Your Computer . After working inside your
computer, follow the instructions in After Working Inside Your
Computer . For more safety best practices, see the Regulatory
Compliance home page at dell.com/regulatory_compliance.
Procedure
Insert a new coin-cell battery (CR2032) into the battery socket with the
positive side facing up, and press the battery into place.
Post-requisites
Replace the computer cover .
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