The Wi-TEK WI-PS310GFR is an 8 Gigabit + 2 SFP Ports Reverse PoE Switch with 8-Port PoE providing seamless network connection. It integrates 1000Mbps Gigabit network capabilities. Port 1-7 for PoE In, Port 8 for PoE Out. It supports 24V Passive PoE compliant PSD and PD, 2 Gigabit SFP can do Uplink Port.
This switch is unusual in that it can be powered using PoE on ports 1-7. These ports are normal gig LAN ports but are also PoE in. The PoE in powers the switch. The switch can be powered from any one or more of the 'in' PoE ports. Port 8 is normal gigabit LAN port BUT with PoE out; using the PoE from the 'in' ports.
PoE can be anything from 12V to 57V which means it will work on 24V PoE or 48/51V 'normal' PoE. This means port 8 could be used for connecting an outdoor bridge or access point which needs PoE (note the voltage needed for the outdoor unit must match the 'in' voltage coming into ports 1-7). Typical application is where you want to use a switch but there's no local power.
The WI-PS310GFR is easy to install and use. It requires no configuration or installation. With outstanding performance and quality, the WI-PS310GFR is a great selection for expanding your home or office network.