Any more than that and you'll either need PoE injectors or a separate switch. I've personally gone the route of buying a 48-port 500W PoE Unifi switch secondhand. While these switches can run ...

Company's octal PHY, at 500 mW per port, is the lowest power PHY in the industry; 48-port switch provides twice the capability of any other single-chip offering Agere ships four single-chip Gigabit ...