Transition Networks Stand-Alone Mini Gigabit Ethernet Media Converter - fiber media converter - GigE - M/GE-PSW-SFP-01-NA - Transceiver Modules - CDW.com
Amazon.com: 1.25G SFP-T Gigabit SFP Copper Ethernet Module, SFP to RJ45, 10/100/1000BASE-T Mini gbic Transceiver for Cisco GLC-T/SFP-GE-T/GLC-TA, Mikrotik SRJ01, Netgear, Supermicro, up to 100m : Electronics