Cisco WS-X6148-RJ21V - Cisco 7600 Ethernet Module / Catalyst 6500 48-Port 10/100 Inline Power Module RJ-21 Retail $199.00
Cisco WS-X6148-RJ-45 - Cisco 7600 Ethernet Module / Catalyst 6500 48-Port 10/100, Upgradable to Voice, RJ-45 Retail $129.00