Cisco 3750 Series 48 Port PoE Switch, WS-C3750-48PS-S Cisco WS-C3750-48PS-S Catalyst 3750-48PS PoE Ethernet Switch The Cisco Catalyst 3750 Series switches are an innovative product line that improves LAN operating efficiency by combining industry-leading ease of use and the highest resiliency available for stackable switches. This product series represents the next generation in desktop switches, and features Cisco StackWise technology, a 32-Gbps stack interconnect that allows customers to build a unified, highly resilient switching system one switch at a time.