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How to Replace the Coin-Cell Battery on OptiPlex 7420 AIO with Energy Efficient Processor

Published Aug 30, 2024

This tutorial provides step-by-step instructions on how to remove and install the coin-cell battery on an OptiPlex All-in-One 7420 with an Energy Efficient processor. Before you begin, power off your computer, and disconnect all attached peripherals. Always wear an ESD wrist strap while working inside the computer to prevent damage due to electrostatic discharge. If you need more information about OptiPlex All-in-One 7420 with an Energy Efficient processor, visit dell.com/support.

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