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The premise of the P7GT’s power-saving design is simple. One of the seven outlets is designated as the “Master”, marking where the main power cord for your PC should be plugged. Three more outlets are labeled “Controlled by Master” and should be reserved for peripherals that are only used when your computer is powered up and active. There are three additional non-controlled outlets that can be used for other standard electronic devices. The power supply of these latter three outlets will not be affected when the computer is powered down.
How does it perform? I'll admit that, in general, I am very wary of devices that claim to have power-saving capabilities. I love the theory behind the P7GT, but I was afraid that it wouldn’t work well in practice. I wasn’t so much concerned that the surge protector would fail to shut off power to the peripherals when hibernation mode was detected; rather, I was more worried that the power wouldn’t be restored fast enough when the PC did become active again.
Despite my concerns, I was pleased to find that the P7GT performed exactly in the manner described by APC. For the few weeks that I have been using the surge protector, there have been no “accidental” power shut-downs, and reviving the PC from sleep mode has always resulted in an immediate power up of controlled devices.