ZyXEL ES2024PWR 24-Port Layer2 Managed 10/100 Fast Ethernet Switch w/ PoE Support Intrusion lock, MAC Freeze, MAC Filtering &amp; Static MAC Forwarding for L1/L2 Security Protection iStacking Clustering Technology, One IP Management for 24 Devices iManage Easy Management Tools (GUI, CLI &amp; Text-based Configuration for Scripting) IEEE802.3af Power over Ethernet (PoE) Maximizes Installment Freedom Easy Web GUI for Intelligent PoE Power Management