Cisco WS-X4920-GB-RJ45 RJ-45 Network Ethernet Module 20-Port 1000 Mbps / 1 Gbps

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

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

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

WS-X4920-GB-RJ45--Catalyst 4900M 20-port Gigabit RJ-45 Half Card

Cisco CVR-X2-SFP, 1 Year Warranty and Free Ground Shipping

Cisco WS-X4920-GB-RJ-45 800-29748-05 20-Port RJ-45 Gigabit Switching Module

CISCO WS-X4920-GB-RJ45 / WSX4920GBRJ45 (USED)