BUFFALO Business Switch Giga PoE+ Web Smart BSL-PS-G2116M - Switch - managed - 16 x 10/100/1000 + 2 x shared Gigabit SFP - desktop, rack-mountable, wall-mountable - PoE+ Buffalo Technology"s Smart Intelligent Power over Ethernet Switches gives small and medium businesses a quick and easy solution for otherwise complex network improvements and expansion. And, with a Buffalo Switch in place, network administrators can rest assured with Buffalo"s Loop Guard warning system. A loop occurs if there is more than one path between two endpoints - possible causes are multiple connections between two network switches, or, two ports on the same switch connected to each other. With Buffalo"s Switches the offending port from which the loop originates is immediately shut down and the switch gives both a buzzer and LED alert. In the past administrators might spend a considerable amount of time detecting and locating such a problem, but with Buffalo"s switches detection and location are just a blinking light and buzzing buzz away. Buffalo"s Smart Intelligent Switches allow businesses to gradually grow their networks as their needs expand with Plug and Play setup, come with advanced features such as VLAN tagging.Layer 2 VLAN Buzzer and LED loop guard Plug and Play setup Gives business networks room for incremental expansion Supported USB settings recovery eliminates or greatly reduces down-time