ES-5705 (24-port 10/100Mbps Fast Ethernet PoE Desktop Switch) provides the seamless network connection. It integrates 100Mbps Fast Ethernet and 10Mbps Ethernet network capabilities. 4 of the 24 Auto-Negotiation RJ45 ports (port-1 to port-4) of the switch support Power over Ethernet (PoE) function. These PoE ports can automatically detect and supply power with those IEEE 802.3af compliant Powered Devices (PDs). In this situation, the electrical power is transmitted along with data in one single cable allowing you to expand your network where there are no power lines or outlets, where you wish to fix devices such as APs, IP Cameras or IP Phones, etc. ES-5705 has the priority * function which will help protect the system when the system power is overloaded. If all PoE PDs power consumption is >= 53W, a priority will be arranged among the PoE ports, then the system will cut off the power of the lowest-priority port. ES-5705 is easy to install and use. It requires no configuration and installation. With desktop design, outstanding performance and quality, the ES-5705 (24-port 10/100Mbps Fast Ethernet PoE Desktop Switch) is a great selection for expanding your home or office network.   FeatureSupports PoE power up to 15.4W for each PoE portSupports PoE power up to 53W for all PoE portsSupports PoE IEEE802.3af compliant PDsSupports IEEE802.3x flow control for Full-duplex Mode and backpressure for Half-duplex Mode4K entry MAC address table with auto-learning and auto-agingLED indicators for monitoring power, link, activity and speed Specifications Standards and ProtocolsIEEE 802.3, 802.3u, 802.3x, 802.3af, CSMA/CD, TCP/IP Basic FunctionCompatible with IEEE 802.3af compliant PDsPort Priority FunctionWire-speed PerformanceMAC Address Auto-Learning and Auto-agingIEEE802.3x flow control for Full-Duplex Mode and backpressure for Half-Duplex Mode Back Board Bandwidth4.8 GbpsMAC Address Table4kForwarding Rate10Base-T: 14880pps/port100Base-TX: 148800pps/portTransmission MethodStore-and-ForwardPorts24 ports 10/100M Auto-Negotiation RJ45 ports with 4 PoE ports (port-1~port-4), Auto MDI/MDIX Network Media10BASE-T: UTP category 3, 4, 5 cable (maximum 100m)EIA/TIA-568 100Ω STP (maximum 100m)100BASE-TX: UTP category 5, 5e cable (maximum 100m)EIA/TIA-568 100Ω STP (maximum 100m)LED IndicatorsPower, Link/Act, 100Mbps, PoE StatusDimensions (W*D*H)17.3*8.3*1.7in. (440*210*44mm)EnvironmentOperating Temperature: 0°C~40°C (32°F~104°F)Storage Temperature: -40°C~70°C (-40°F~158°F)Operating Humidity: 10%~90% non-condensingStorage Humidity: 5%~90% non-condensingPowerAC 170-260V @ 50-60Hz