Amazon.com: 6COM 10GBase-T SFP+ Copper Transceiver, 10G RJ45 Module, up to 30 Meters, Compatible for Intel E10GSFPT and Other Open Switches : Electronics
Amazon.com: 10G SFP+ to RJ45 for Dell GP-10GSFP-T SFP-10G-T GP-10GSFP-T-I 10GBASE-T SFP+ Copper RJ-45 30m Transceiver Module : Electronics
10GBase-T SFP+ to RJ45 Copper Transceiver SFP Module for Cisco SFP-10G-T-S 10Gb