Patent ID: 8386813

Claim:
A host equipped with a Universal Serial Bus (USB) network-device, the host comprising: a power manager configured to deliver a host suspend mode notification message to a status manager upon a transition to a host suspend mode, and, upon receiving a notification from a USB driver of a status transition to a normal status (D 0 ), send a SetPower notification message to the USB driver to power off; the status manager configured to deliver a status transition message instructing the USB driver to transition to the normal status (D 0 ) upon receiving the host suspend mode notification message from the power manager; and the USB driver configured to, in response to the status transition message, cause a power status of the USB network-device to transition to the normal status (D 0 ), notify the power manager of the status transition to the normal status (D 0 ), and, upon receiving the SetPower notification message resulting from the host suspend mode transition from the power manager, cause the power status of the USB network-device to transition from the normal status (D 0 ) to a power off status (D 3 ).