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Cisco WS-X4920-GB-RJ45 20 Port Gigabit RJ-45 Ethernet Module

Cisco Catalyst 4900M 20-PORT 10/100/1000 RJ-45 Half Card WS-X4920-GB-RJ45

Cisco 20-Port RJ-45 WS-X4920-GB-RJ45 10/100/1000 RJ45 Switch Module for 4900M

Cisco Catalyst 10/100/1000BASE-T half-card Ethernet module WS-X4920-GB-RJ45

Cisco WS-X4920-GB-RJ45 Catalyst 4900M 20-Port Gigabit Ethernet Line Card

Cisco WS-X4648-RJ45V+E Catalyst 4500 48x1G RJ45 Linecard

Cisco WS-X4908-10GE Half Card Catalyst 4900M X2 Chassis Module 8-Port 10GE