MikroTik CRS305-1G-4S IN, Cloud Core switch, featuring four SFP ports, for up to 10 Gbit per port. The device has a 1 Gbit copper ethernet port for management access and two DC jacks for power redundancy. The device is a very sleek and compact metallic case without any fans, for silent operation. Includes 24V 0.8A AC power adapter Više informacija na linku