and the connected Ultra Power over Ethernet splitter – the POE-171S – will separate the digital data and the power into three optional outputs 
the GSW-1601 is able to operate all along without a fan
The IGS-5226-4P2T not only provides ultra high transmission performance
Acoustic echo cancellation for integrated speakerphone operations
the GS-4210-24P(L)4C operates on a per-port basis at 10Mbps duplex operation but can support 36-watt PoE power output over a distance of up to 250 meters overcoming the 100m limit on Ethernet UTP cable
Netonix WS-6-MINI Mini Managed Passive POE Switch fiber-optics and the connected Ultra PowerDesigned with a rugged chassis and extended operating temperature range with a simple yet powerful user interface. Configureable voltage current 24V PoE Ports Pins 4,5 (+) Pins 7,8 ( ) 1A 48V PoE Ports Pins 4,5 (+) Pins 7,8 ( ) 1A 24VH PoE Ports Pins 1,2,4,5 (+) Pins 3,6,7,8 ( ) 2A 48VH PoE Ports Pins 1,2,4,5 (+) Pins 3,6,7,8 ( ) 2A Ports 02 06 Ports 02 06 N A Port 02 Manufactured in North America Standard Desktop Wall mount Optional DIN Rail