E-series line card provides increased switching capacity per slot. Fetaures 48 gigabits per-slot capacity Bandwidth is allocated across four 3-port groups, providing 12 Gbps per port group (2.5:1) Up to 12 ports 10GE SFP+ (10GBASE-R) or 12 ports GE SFP (1GBASE-X) SFP+ & SFP can be used simultaneously on the same line card without any restrictions Cisco IOS XE Release 3.1.0SG or later IEEE 802.1AE & Cisco Trust Sec capability in hardware L2-4 Jumbo Frame support (up to 9216 bytes)