Power over Ethernet (PoE) network switch.
This model is described as a 16-port Gigabit Ethernet (GE) switch with 2 uplink GE ports and 1 uplink GE SFP port.
PoE switches combine data signals and electrical power into a single Ethernet cable, eliminating the need for separate power supplies for compatible devices like IP cameras or phones.
It is designed for rack mounting, as indicated by the mounting brackets on the sides.
The device is available from various online security and electronics suppliers.
