What is the first step a technician should take when preparing to work on the inside of a computer?

What is the first step a technician should take when preparing to work on the inside of a computer?

• Remove the power supply.
• Disconnect the computer from power.
• Disconnect the computer from the network.
• Remove external devices such as a mouse.

Explanation: Before any service inside a computer is performed, the PC should be turned off and disconnected from any source of power to reduce the risk of shock.

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