product description : np2500 power over ethernet switch standard : ieee 802.3 10base-t, ieee 802.3u 100base-tx, ieee 802.3ab 1000base-t, ieee 802.3af no of ports : 24 x 10/100mbps auto-negotiation, auto-mdix poe ports (port 1 ~ port 24) 2 x 10/100/1000mbps auto-mdix gigabit ethernet ports (port 25 ~ port 26) poe (power over ethernet) : up to 15.4w for poe port maximum 170w for all poe ports data ram buffers : 768k bytes per device filtering address table : 4k entries per device power : 100 - 240vac 50/60hz, internal universal switching power dimension(h x w x d) : 310 x 440 x 44 mm * poe powered device (pd) classification identify * manual setting for poe power limitation * supports poe priority setting * poe over current protection * poe circuit sorting protection