https://www.ebay.com/sch/i.html?_nkw=Addon+Extreme+Compatible+Bx+Xfp+Transceiver+Xfp+Transceiver+Module+10+Gigabit+Ethernet&_sacat=0&_dmd=2

Addon Extreme Compatible Bx Xfp Transceiver - Xfp Transceiver Module - 10 Gigabit Ethernet

Regular price
$424.00
Sale price
$304.00

XFP transceiver module (equivalent to: Extreme Networks 10110-BX-U) - 10 Gigabit Ethernet - 10GBase-BX - LC single-mode - up to 6.2 miles - 1270 (TX) / 1330 (RX) nm - for Extreme Networks BlackDiamond 10808 6