Amazon.com: 1000BASE-T SFP to RJ45, 1.25G SFP-T Gigabit SFP Copper RJ45 Module Mini GBIC Transceiver for Ubiquiti UF-RJ45-1G, Supermicro, Netgear, Broadcom, Other Open Switches, up to 100m : Electronics
Cisco GLC-TE SFP (mini-GBIC) Copper RJ-45 Transceiver - FS.com Europe
SFP-7000-RJ45A - Gigabit copper SFP transceiver, 10/100/1000Base-TX, max range 100m, RJ45 connector