The Advanced Surge Protector is perfect for the home office or professional workstation. Voltage fluctuations, surges, and spikes can damage your computer and peripherals and degrade overall performance. Belkin’s Advanced Surge Protector safeguards your personal computer, printer, hard drives, modems, and other hard-to-replace equipment against damage, data loss, file corruption, and system crashes.Please note: The protective components inside surge protectors absorb over-voltage spikes to protect your connected devices which means they will eventually wear out. Replace them every 3 years or immediately after any over-voltage spike event such as a thunderstorm or power outage because surge protectors degrade faster if they are exposed to high intensity events. Periodically check the surge protector enclosure and cable for signs of wear or heat distress. Replace an expired surge protector with a new one at the end of its useful life.