The Cisco Catalyst 3750 Series Switches are original switches that improve LAN operating effectiveness by combining ease of use and high resiliency for stackable switches. This product series features Cisco StackWise technology, which is a 32-Gbps stack interconnect that allows consumers to assemble, one switch at a time, a combined, highly durable switching system.
 

Part numbers associated with this product;

WS-C3750G-24TS-E1U, WS-C3750G-24TS-S1U, WS-C3750G-24TS-E, WS-C3750G-24TS-S, WS-C3750G-24WS-S25, WS-C3750G-24WS-S50, WS-C3750G-24T-E, WS-C3750G-24T-S, WS-C3750G-12S-E, WS-C3750G-12S-S