Cisco Catalyst 6500 Series 10 Gigabit Ethernet Interface Modules
Cisco Catalyst 6500 Series Mixed Media Gigabit Ethernet Modules - Cisco
Amazon.com: 6COM 1.25G SFP-T, Gigabit SFP to RJ45 Copper SFP Transceiver, 1000Base-T Module for Cisco GLC-T/SFP-GE-T, TP-Link, Netgear, Supermicro and Other Open Switch : Electronics