The Catalyst 8540 Two-Port Enhanced Gigabit Ethernet Module is ideal for supporting Layer 3, Gigabit backbone applications that require nonblocking, wire-speed performance. The Two-Port Enhanced Gigabit Ethernet Module is supported by the Catalyst 8540 platform, a high-end multiservice switch that provides large enterprises and service providers with both Layer 3 and ATM switching in one integrated platform.This product is a 2-port Gigabit Ethernet 64K module with ACL.