POWER DOWN SIGNAL FOR PORT OF NETWORK DEVICE

摘要

A network device including a power supply, a communication port and a power line between the power supply and the communication port. A controller is to turn on a switch so that power can be delivered to the communication port along a second power line parallel to the first power line, before sending a power down signal.

主权项

1. A network device comprising
a power supply; a communication port capable of sending and receiving data over a wired link and capable of delivering power from the power supply over a wired link to an external device; a first power line between the power supply and the communication port, the first line including an inductor; a second power line between the power supply and the communication port, said second power line being in parallel with the first power line, the second power line having a switch; when the switch is ON power may be conducted over the second power line and when the switch is OFF the power is not conducted over the second power line; a controller to turn the switch ON before sending a power down signal for the port and to turn the switch OFF after a power down operation for the port is completed.