https://www.ebay.com/sch/i.html?_nkw=Addon+Qsfp+Module&_sacat=0&_dmd=2

Addon Qsfp+ Module

Regular price
$185.00
Sale price
$124.00

QSFP+ transceiver module (equivalent to: Finisar FTL410QE2C) - 40 Gigabit Ethernet - 40GBASE-SR - MPO multi-mode - up to 492 ft - 850 nm