Safe transport of PC parts: Which item specifically requires an anti-static (ESD) bag during handling and transport?

Introduction / Context:
Electrostatic discharge can silently damage semiconductor junctions in printed circuit boards (PCBs). ESD-safe handling and packaging (anti-static bags, foam, and shielding) are mandatory for boards and modules. Identifying which items demand ESD precautions is core to field service practice.

Given Data / Assumptions:

• I/O controller is a PCB with sensitive ICs and traces.
• Monitors and power supplies are largely metal-chassis assemblies with fewer exposed logic components.
• Floppy disks require magnetic protection, not ESD shielding.

Concept / Approach:
Any bare PCB or electronics module (e.g., I/O controller, NIC, sound card, storage controller) should be stored and transported in an anti-static bag. This prevents charge accumulation and discharge into components. Mechanical assemblies (monitor, PSU) are less vulnerable during transport, and magnetic media like floppy disks call for anti-magnetic sleeves rather than ESD bags.

Step-by-Step Solution:

Verification / Alternative check:
Manufacturer packaging for controllers and add-in cards ships in ESD shielding bags. Service manuals specify ESD precautions for logic boards.

Why Other Options Are Wrong:

• Monitor: Primary risks are mechanical and high-voltage safety, not ESD.
• Floppy disks: Sensitive to magnets and dust; ESD bag not standard protection.
• Power supply: Contains electronics but is enclosed; ESD handling is less critical during transport compared to exposed PCBs.
• None of the above: Incorrect because the I/O controller absolutely requires ESD packaging.

Common Pitfalls:
Handling boards outside their ESD bags on carpeted floors, or using pink anti-static bags (dissipative) when a shielding (metalized) bag is required.

Final Answer:
I/O controller