The Supervisor Engine 6L-E delivers 24 Gbps per slot of switching capacity when deployed with the E-Series line cards in a Cisco Catalyst 4500 E-series chassis. You can mix & match classic line cards & E-Series line cards within a Cisco Catalyst 4500 E-series chassis with no performance degradation. When you deploy the Cisco Catalyst Supervisor Engine 6L-E with classic line cards, all of the features except the 24-Gbps per-slot switching capacity are inherited. The Cisco Catalyst Supervisor Engine 6L-E also provides flexibility & an easy migration path to 10 Gigabit Ethernet uplinks with dual-purpose X2 slots that can accommodate wire-speed 10 Gigabit Ethernet optics or Cisco Twin Gig Converter Modules, enabling Gigabit Ethernet SFP optics. The Cisco Twin Gig converter module, which ships standard with the Supervisor Engine 6L-E, converts a single 10 Gigabit Ethernet X2 interface into two Gigabit Ethernet port slots that can be populated with appropriate SFP optics, providing a total of 4 Gigabit Ethernet uplinks if used in both X2 interface slots. With the flexibility offered by the Cisco Twin Gig converter module, you can initially use the gigabit uplinks, & then, as your business demands change, you can simply remove the Cisco Twin Gig converter module & insert 10 Gigabit Ethernet X2 optics to provide full line-rate 10 Gigabit Ethernet uplinks. The ability to support both Gigabit Ethernet uplinks & 10 Gigabit Ethernet uplinks on a single supervisor engine further demonstrates the flexibility & the investment protection of the Cisco Catalyst 4500 series. Power consumption on the Supervisor Engine 6L-E is optimized, & when combined with Cisco Catalyst 4500 line cards, the system supports Power over Ethernet (Po E), Cisco enhanced Po E, & ready for Po EP with support for 30W/port. The capabilities & investment protection provided by the Supervisor Engine 6L-E facilitate not only adequate scalability for todays network access requirements but also future-proofing by providing significant software functionalities for future deployments.