Built-in surge protectors often aren’t strong enough to handle larger surges and spikes and, like other smaller surge protectors, can wear out without your even knowing it, leaving you with no protection at all. Built-in protection for one piece of equipment may still leave you without protection for important peripherals such as answering machines, modems, printers, etc. In addition, built-in protectors don’t provide back-up power which lets you perform orderly shut-downs.
