Power disturbances such as surges, lightning and power grid fluctuations can have a devastating impact on the valuable electronics you rely on every day. This product provides guaranteed protection from damaging power surges and spikes. Number of Outlets: 8 AC; 2 USB; Joules Of Surge Protection: 2,630 J; Lines: 1; Noise Protection: 35 dB to 70 dB EMI/RFI Noise Filtration.