low cost managed switchprovide an affordable solution for businesses of all sizes that require simple network management. It consist of 4, 8,16, 24 Fast and Gigabit port models with a wide variety of powerful L2 and L2+ functions and features. The models support 802.3af/at Power over Ethernet (PoE), with a range of PoE power budgets from 60W to 380W. There are also two PoE-powered models, one of which has the ability to pass-through power to one or two PoE devices downstream.