6 ports provide backup power and surge protection, and 6 additional ports provide only surge protection

I bought it for surge protection but this unit just shuts off

I haven't used surge protection feature for the telephone lines

This is a solid product with good setup for UPS and surge protection.

The eco550UPS comes with 8 outlets, 4 for surge protection and the other 4 are energy savers for peripheral hardware.

Hopefully, I don't have an occasion to see if the surge protection works.

However, if I plug my printer into the unit, for surge protection, then the ECO outlets go off when the printer powers up or wakes up from sleep.

This time the Tripp Lite took the blow (indicated by the surge protection light that lit up)!