Mobile power protection for users on the go: When you're on the go, ensure your notebook is protected against damaging power surges. The Port Authority 2701X Surge Suppressor isolates damaging spikes and surges, safeguarding your sensitive electronics equipment and precious data. With a less than one nanosecond clamping time, the 2701X stops damaging surges before they enter your computer. The negative effects of Electro-Magnetic and Radio Frequency Interference (EMI/RFI) are also kept in check by a built-in noise filter. Pocket-sized, it also provides surge protection for your modem. Don't take chances - get on-the-go protection with the 2701X.