Using industrial-grade components, the Lexmark Surge Protective Device shuts off damaging current spikes before they can reach your Lexmark laser printer or MFP. Telecom lines can carry device-damaging surges too, so the surge protector stands guard on the fax line going into your Lexmark MFP.
Unlike typical consumer-grade surge protectors, the Lexmark Surge Protective Device's printed circuit board has two layers of glass fiber for better flame resistance, plus thicker two-ounce copper plating to better spread and dissipate heat. There's also insulating tape and fiberglass component covers for an additional layer of heat protection during a surge event.