Patent ID: 8032773

Claim:
A computer system having a normal mode and a standby mode to decrease power consumption, the computer system comprising: a network card functioning as a wake-up unit to sense if a wake-up event occurs in the standby mode; a power supplying unit to supply power to the network card; a controlling unit to control the power supplying unit; and a user inputting unit operable to receive a user input to set whether the network card is to be in an inoperable state or an operable state in the standby mode, wherein, when the computer system transitions from the normal mode to the standby mode, the controlling unit is configured to control the power supplying unit to cut off power to the network card if the network card is set to be in the inoperable state in the standby mode, wherein the controlling unit is configured to control the power supplying unit to supply power to the network card if the network card is set to be in the operable state in the standby mode, wherein, the network card is incapable of detecting the wake-up event when power is cut off to the network card in the standby mode, and the network card is capable of detecting the wake-up event when power is supplied to the network card.