Cisco Catalyst WS-C4503

 The Catalyst 4503 switch supports the Supervisor Engine II, II+, II+TS, II+10GE, IV, V, and V-10GE. The supervisor engine has a nonblocking, full-duplex, switching fabric that provides connections between the supervisor engine and the switching modules. The Gigabit Ethernet ports can be configured with any combination of copper 1000BASE-T, shortwave SX, LX/LH, and ZX interfaces, or CWDM and DWDM GBICs.