Cisco Catalyst 2960-SF switches provide secure, reliable business operations with features that lower total cost of ownership. Features 48 ports of 10/100 Mbps Fast Ethernet Flex Stack technology, which simplifies operations, enabling a stack to be configured & managed as a single switch with 20 Gbps of stacking throughput. Flex Stack requires an optional module & is only available on LAN Base models Small Form-Factor Pluggable (SFP) Gigabit Ethernet uplinks IEEE 802.3at Power over Ethernet Plus (Po E+) support, which delivers up to 30 watts (W) per port USB (Universal Serial Bus) storage interface for file backup & transfer Flexible quality of service mechanisms to enable priority treatment of real-time traffic & critical business applications A variety of authentication methods to provide secure network access Cisco Catalyst Smart Operations features to simplify administration & lower total cost of ownership