The Cisco Gigabit Ethernet WAN EHWIC (EHWIC-1GE-SFP-CU) is an enhanced high-speed interface card providing copper and optical Gigabit Ethernet ports and connectivity of T1/E1 and T3/E3 over copper for Cisco ISR.

The Cisco Gigabit Ethernet enhanced high-speed WAN interface card provides copper and optical Gigabit Ethernet connectivity through a dual-purpose uplink (DPU).