Check the listing for details. Ethereal HDM-SP3 HDMI Surge Protector. Condition: New. Listed at 99.99 USD. Product highlightsdesigned to clamp ESD spikes up to 8000 volts down all channels of an HDMI connection, including the TMDS (Transition-Minimized Differential Signaling) and DDC (Display Data Channel) lines does not protect against direct lighting strikes or minor over voltage supports 24 Gbps maximum bandwidth (can pass 4K/60Hz video) warranty: 1 year What's in the boxHDMI surge protector About this itemWritten by Crutchfield's Steve KindigHDMI is sensitive to data port ESD (electrostatic discharge) spikes, which can destroy an HDMI port and stop your electronic component from working. ESD is the sudden flow of electricity between two electrically charged objects caused by contact, an electrical short, or dielectric breakdown. The HDM-SP3 was designed to clamp ESD spikes up to 8000 volts down all channels of an HDMI connection, including the TMDS and DDC lines. This will protect your equipment from the spikes that enter your system through any of the data ports (coax, Ethernet and serial), usually from your CATV/internet provider. The HDM-SP3 does not protect against direct lighting strikes, which are well beyond 8000 volts. It also doesn't protect against minor over voltage, which is neither a spike nor a surge, but rather a constant feed of too much voltage. It gets passed onto the HDMI feeds and eventually wears out the HDMI ports downstream. The HDM-SP3 has one female HDMI jack and one male HDMI connector. Your HDMI cable plugs into the HDM-SP3's female HDMI jack, while the HDM-SP3's male connector plugs into the input or output of your electronic device.