If in-line power switch/hub is provided, you don’t need to connect the phone to the power
adapter. Make sure the switch/hub is PoE-compliant.
The IP phone can also share the network with another network device such as a PC (personal
computer). It is an optional connection. We recommend that you use the Ethernet cable provided
by Yealink.
Important! Do not unplug or remove the power while the IP phone is updating firmware and
configurations.