A host computer equipment includes an apparatus configured to perform a method for supporting a selective suspend mode of a Universal Serial Bus (USB) network-device. The host includes a power manager, a status manager, and a USB driver. When there is a transition to a host suspend mode, the power manager delivers a host suspend mode notification message to the status manager. The status manager delivers a status transition message of instructing a normal status (D0) transition to the USB driver. The USB driver makes a power status of the USB network-device transit to a normal status (D0), notifies the power manager of the status transition to the normal status (D0), and makes the power status of the USB network-device transit from the normal status (D0) to a power off status (D3).