product description : 8-port desktop switch with 4 poe ports network standards : ieee 802.3 ethernet, 802.3u fast ethernet ieee 802.3x flow control, ieee 802.3af poe interfaces : 4 x rj-45 10/100base-tx ports with 802.3af poe 4 x rj-45 10/100base-tx ports without 802.3af poe power adapter socket mac address table : 1k switch fabric : 1.6gbps transmission method : store-andforward buffer memory : 96kb power supply : 48v dc/1.45a (through ext power adapter), 62.3 w poe budget: up to 15.4 w max/port (1 to 4 only); 56w total dimension(h x w x d) : 29 x 171 x 98 mm weight : 454 grams * enables home and office users to easily connect and supply power to power over ethernet (poe) devices such as wireless access points (ap), ip cameras, and ip phones while adding more ethernet devices like computers, printers, and network attached storage (nas) onto a network