Cisco Catalyst WS-C3560X-24T-S Is 24 Gigabit Ethernet Ports Standalone Switch With No Stacking Option In IP Base Feature Set. Four Optional Network Modules And License-base Software Offer Flexibility, Scalability  Extensibility In Order To Reduce The Cost Of Development Of Business Needs. IP Base Set Provide Up To 1005-Vlans And Basic Layer 3 Routing , Advanced Security  And Management . WS-C3560X-24T-S Is Designed For Enterprise Access/aggregation Layer Switching; However, Customers Can Transparently Upgrade The Software Feature To By Purchasing IP Services License To Activity Advanced Layer 3 Capability To Fully Support BGP, EIGRP, OSFP Routing. WS-C3560X-24T-S Switch Comes With One Default Power Supply Module, Customers Can Purchase Additional Power Supply Module Insert Into Power Supply Bay 2 In Order To Power Redundancy.24 * 10/100/1000 Ethernet Ports Four Optional Uplink Network Modules With GE Or 10GE Ports Dual Redundant, Modular Power Supplies And Fans Baseline Layer 3 Routing Features Media Access Control Security (MACsec) Hardware-based Encryption Flexible NetFlow And Switch-to-switch Hardware Encryption With The Service Module Uplink USB Type-A And Type-B Ports For Storage And Console Respectively And An Out-of-band Ethernet Management Port.