*REFURB FD ONLY* SF 100D-16 16-port 10/100 desktop switch. The Cisco SF 100D-16 16-Port 10/100 Switch, a Cisco Small Business Unmanaged Switch, offers the performance and ease of use needed to connect small businesses. The switch works right out of the box and does not require any management or configuration. The Cisco SF 100D-16 is protected by a limited lifetime warranty.