https://www.ebay.com/sch/i.html?_nkw=Addon+1Gbs+1+Rj+45+To+1+Sfp+Media+Converter+Fiber+Media+Converter+Gigabit+Ethernet&_sacat=0&_dmd=2

Addon 1Gbs 1 Rj-45 To 1 Sfp Media Converter - Fiber Media Converter - Gigabit Ethernet

$217.00
$149.00

Fiber media converter - Gigabit Ethernet - 1000Base-TX - RJ-45 / SFP (mini-GBIC)