TP-Link TL-SG2428P, Lan 10/100/1000 (Gigabit Ethernet), Connection 24x RJ45, 4x SFP, 28 Port Switch, Internal, Black, PoE max. 250 W, Display Status LEDs, Cooling 2x, voltage input 100 - 240 V AC, Frequency 50/60 Hz. 250 W Poe Budget 24x 802.3at/Af-compliant Poe+ Ports With A Total Power Supply Of 250 W. Full Gigabit Ports: 24x Gigabit Poe+ Ports And 4x Gigabit Sfp Slots Provide High-speed Connections.