The WS-C3550-24-SMI does not support PoE. The WS-C3550-24PWR-SMI supports PoE however.
Also note the 3550's are EOL/EOS:
(see related link)
Cisco PoE stands for Cisco Power over Ethernet. Cisco Power over Ethernet provides wireless service, along with internet service is the United States.
The Cisco Power over Ethernet (PoE) switch allows connectivity to ethernet-powered devices including wireless access points, video cameras, and Cisco IP phones.
Providing PoE
YES
No, the WS-C3550-24-SMI will not support PoE of any type.
no
Cisco Technical Documentation
Some recommended books about Cisco routers are: Cisco Router Configuration, Cisco Routers For The Desperate, Cisco Routers for IP Router, Cisco CCNA Routing and Switching.
One feature of the Cisco 2610 router is that it has either single- or dual-fixed LAN interfaces. Other features of the Cisco 2610 router are that it can browse the internet safely with firewall protection and the routing comes standard with bandwidth management.
Cisco Saldana goes by Cisco Lution.
Cisco Reyes goes by The Cisco Kid.
cisco is not an animal