Ports   24 10/100/1000Mbps  Media interfaces RJ45  Switching features 24 10/100/1000Mbps ports   Innovative energy-efficient technology saves power up to 20%   Supports MAC address self-learning, Auto MDI/MDIX and Auto negotiation   Plug & play design     Power Supply Input: 100~240VAC, 50/60Hz Output: 12VDC/2.0A  Others Dimentions ( W x D x H ) 11.6*7.1*1.7 in. (294*180*44 mm)