NETGEAR GSM4230UP. Switch type: Managed, Switch layer: L2/L3. Basic switching RJ-45 Ethernet ports type: Gigabit Ethernet (10/100/1000), Basic switching RJ-45 Ethernet ports quantity: 24. Networking standards: IEEE 802.3bt. Power connector: AC-in jack. Power over Ethernet (PoE). Rack mounting, Form factor: 1U