Introduction to the official website: Cisco 8832 Poe injector function provides Ethernet data connection with Cisco 8832 IP conference phone through usb-c connection (RJ-45 to usb-c). When used in Ethernet power supply deployment, it can also be used as Poe adapter, and Cisco is required for deployment in non Poe environment 8832 power supply (Ethernet connection without POE), which is equivalent to the usb-c network card and Poe power supply of the phone. In this way, do you understand that Poe supplies power to this adapter, and provides power support and network connection to Cisco 8832 IP power through usb-c. Note: This is not a usb-c network card, this is a network to usb-c. there is no response on the computer connected to usb-c. please note. Cisco 8832 PoE Injector Features??Provides Ethernet data connection to your Cisco 8832 IP Conference phone through USB-C connection (RJ-45 to USB-C)Also functions as PoE adapter when used in a Power over Ethernet deploymentRequires Cisco 8832 Power Supply when deployed in a non-Poe environment (Ethernet connection without PoE) Use it as shown in the figure below.