Patent ID: 8219837

Claim:
An electronic device with a serial ATA interface connectable to a host via a serial ATA bus, comprising: a reporting module configured to report completion of execution of a predetermined command to the host, the predetermined command being configured to designate a portion of the electronic device in a first power saving mode and being output from the host, the portion of the electronic device excluding the serial ATA interface; and a control module configured (a) to control setting of a second power saving mode for the serial ATA interface after the reporting, the second power saving mode being related to the first power saving mode, the control module comprising a timing module configured to determine a period required from the time of the reporting to the time when the serial ATA interface is set to the second power saving mode, and (b) to control setting of the second power saving mode after the determined period elapses from the time of the reporting, wherein the first power saving mode and the second power saving mode are modes in which the electronic device consumes power.