A Power Over Ethernet switch device can send power in addition to data over a network through ethernet cables. This prevents the need for a seperate power unit for your end point devices. The decrease in cables makes keeping your system tidy a lot less difficult.
A poe switch can be used with a range of pieces of equipment such as voice over ip (voip) phones and ip surveillance devices. A poe switch with 96 ports or more is not uncommon in a larger company, but many small ones may use a 4 port to twenty four port unit.
The web is a good place to source a low-cost power over ethernet switch device such as the srw2024. Be sure you confirm the specifications before ordering to ensure that you are getting the appropriate device for your application.