Environmental compliance — Which PC component must be disposed of in accordance with EPA/regulated hazardous waste guidelines?

Introduction / Context:
Electronics disposal involves safety and environmental regulations. Some parts contain hazardous substances that require special handling. Correctly identifying these components prevents fines, fires, and environmental harm.

Given Data / Assumptions:

• Typical desktop/laptop parts under U.S. EPA-like rules.
• Focus on the component with explicit hazardous classification.
• General office IT disposal context.

Concept / Approach:

Batteries (Li-ion, NiMH, or lead-acid) are regulated due to chemical and fire risks. They must be collected and recycled via approved programs. While motherboards and PSUs should be recycled as e-waste, the item clearly requiring EPA-compliant special handling is the battery.

Step-by-Step Solution:

Verification / Alternative check:

Municipal and federal guidelines list batteries separately for collection and transport. Many organizations maintain battery recycling bins.

Why Other Options Are Wrong:

Keyboards and PSUs are not individually hazardous though they should be recycled; motherboards are e-waste but the question asks which item specifically requires EPA hazardous handling—battery.

Common Pitfalls:

Throwing coin cells into trash; transporting swollen Li-ion without proper containment; mixing battery chemistries during disposal.

Final Answer:

Battery.