The Zy XEL GS1900 series of 48-port Gb E Smart Managed Switch with Gigabit speed & essential managing functions bring your business network more flexibility & connectivity. Providing Gb E switches with power saving functions, fanless design & full IPv 6 support ensure your network to be ready for future expansions. In addition, the Po E models GS1900-48HP Gigabit switch complies with the IEEE 802.3at Power over Ethernet (Po E) Plus standard. The complete GS1900 series has been designed with useful features & advanced performances that empower your networks with speed & security as well as silent operation in your office environments.