https://www.ebay.com/sch/i.html?_nkw=Addon+Network+Upgrades+Sfp+Mini+Gbic+Module&_sacat=0&_dmd=2

Addon - Network Upgrades Sfp (Mini-Gbic) Module

Regular price
$216.00
Sale price
$147.00

Model Brand: AddOn - Network Upgrades Type Type: SFP (mini-GBIC) Details Specifications: 1 x 1000Base-SX Features Features: 1 x 1000Base-SX Network