A technician is preparing to perform a processor upgrade on a critical company server. Which of the following precautions should be taken FIRST before performing such work on a system? (Select TWO).

Discharging PSU capacitors is extremely dangerous and is not a standard technician precaution - it risks fatal electric shock and should never be performed casually.

Removing all jewelry (rings, bracelets, watches) is a critical first precaution because metal jewelry can contact exposed circuitry, cause short circuits, or scratch components during physical work inside a server.

Ensuring the PSU is plugged into a grounded socket is a general facility requirement, not a specific first precaution taken by the technician immediately before hardware work.

Lowering room humidity is not a standard or practical precaution before a server hardware upgrade - normal data center humidity controls are already in place.

An anti-static wrist strap grounds the technician to the equipment chassis, continuously dissipating any static charge buildup and preventing ESD from damaging sensitive processor and motherboard components during the upgrade.