https://www.ebay.com/sch/i.html?_nkw=Addon+Qsfp+Transceiver+Module+40+Gigabit+Ethernet&_sacat=0&_dmd=2

Addon - Qsfp+ Transceiver Module - 40 Gigabit Ethernet

Regular price
$389.00
Sale price
$278.00

QSFP+ transceiver module (equivalent to: Avago AFBR-79E3PZ) - 40 Gigabit Ethernet - 40GBASE-SR4 - MPO multi-mode - up to 984 ft - 850 nm