24 Gigabit Ports: 24 10/100/1000Mbps auto negotiation ethernet ports support IEEE 802.3i / 802.3u / 802.3ab / 802.3x / 802.3az standard. Simple set up with no software to install or configuration needed. Reliable Performance. Provide large file transferring and also be compatible with any 10/100/1000Mbps Ethernet devices. IEEE 802.3x flow control for Full Duplex mode and backpressure for Half Duplex mode offer increased bandwidth to alleviate network congestion, making the switch work reliably. Energy Efficient: Designed to optimize power usage lowering its cost to operate, compliant with IEEE802.3az Energy Efficient Ethernet mode. Versatile Mounting Options: 19-inch metal case supports desktop or rackmount placement, and includes all the necessary mounting hardware in the box. Every Network switch designed by Cudy is rigorously tested for reliability, quality, and performance. Silent Operation: The fanless design of this 24 port gigabit switch means zero added noise wherever its located, making it ideal for noise-sensitive environments