Ubiquiti UISP-S-Pro passive PoE switch for ISPs. Connections: 24x RJ45, 4x SFP. Number of PoE ports: 16, PoE standard: 802.3af/at, PoE 30 watts, PoE budget: 220 W. Mounting: 19" rack. 24x GbE RJ45 ports, of which 16x have passive 27V PoE output, 4x 10G SFP ports. 220 W (27 V) total PoE availability, 15 W/port (2-pair) / 30 W/port (4-pair). 1.3" LCM color touchscreen, easy Bluetooth setup with the UISP Mobile App. A Layer 2 PoE switch with 24 ports designed for ISP networks. Power over Ethernet (PoE) allows compatible devices to be powered through the network cable. This reduces cabling effort and provides high flexibility in placing end devices such as wireless access points, IP phones, and IP cameras. The IEEE 802.3at standard provides a maximum of 25.4 watts of power per PoE port with a voltage of up to 50 volts. After line losses, 21.90 watts of usable power remain to avoid exceeding the maximum power output. For PoE, a Cat5e/6 cable with a maximum length of 100 m is recommended. Ubiquiti Networks is an American manufacturer of high-performance network components, founded in 2005. The company offers cutting-edge and easy-to-implement communication solutions for a global customer base. Ubiquiti products stand out for their superior performance, clever mechanical design, and user-friendly operation.