The Cisco Catalyst 4500E Series 48-port Gigabit Ethernet line cards provide high-performance 10/100/1000 switching. Two types of E-Series line cards are available, based on the per-slot bandwidth: 47xx line cards that drive 48 Gbps per slot, and 46xx line cards that drive 24 Gbps per slot. The Cisco Catalyst 4500 48-port 10/100/1000 PoEP E-Series 47xx line card provides standard IEEE 802.3at PoEP support on all 48 ports simultaneously. All series 47xx line cards support standard IEEE 802.1AE encryption and Cisco TrustSec™ in hardware. The Cisco Catalyst 4500 48-port 10/100/1000 line cards are available in four versions: Data Only, PoE, PoEP, and UPOE.