Which is the correct sequence for connecting cables during replacement?

Which is the correct sequence for connecting cables during replacement?

• A. Connect all data cables first, then power
• B. Attach all cables except power first, then connect power
• C. Connect power first, then attach other cables
• D. Attach cables randomly

Answer: (B)

The practical idea here is to minimize risk by handling all non‑power connections while the system is off, and then applying power once everything is securely in place. Attaching data cables and other connections first ensures they’re properly seated without live voltage on the lines, which reduces the chance of short circuits, arcing, or damage to ports as you complete the wiring. Only after all non-power cables are connected should you connect the power supply and power the device. Connecting power first can energize the system while you’re still routing cables, increasing the risk of damage or faults.

The practical idea here is to minimize risk by handling all non‑power connections while the system is off, and then applying power once everything is securely in place. Attaching data cables and other connections first ensures they’re properly seated without live voltage on the lines, which reduces the chance of short circuits, arcing, or damage to ports as you complete the wiring. Only after all non-power cables are connected should you connect the power supply and power the device. Connecting power first can energize the system while you’re still routing cables, increasing the risk of damage or faults.