https://www.ebay.com/sch/i.html?_nkw=Addon+Network+Upgrades+100Mbs+1+Rj+45+To+Fc+Mmf&_sacat=0&_dmd=2

Addon - Network Upgrades 100Mbs 1 Rj-45 To Fc Mmf

Regular price
$281.00
Sale price
$197.00

Fiber media converter - Fast Ethernet - 10Base-T 100Base-FX 100Base-TX - RJ-45 / FC multi-mode - up to 12.4 miles - 1310 nm