https://www.ebay.com/sch/i.html?_nkw=Addon+Avaya+Aa1403001+E5+Compatible+Xfp+Transceiver+Xfp+Transceiver+Module+10+Gigabit+Ethernet&_sacat=0&_dmd=2

Addon Avaya Aa1403001-E5 Compatible Xfp Transceiver - Xfp Transceiver Module - 10 Gigabit Ethernet

Regular price
$391.00
Sale price
$280.00

XFP transceiver module (equivalent to: Avaya/Nortel AA1403001-E5) - 10 Gigabit Ethernet - 10GBase-LR - LC single-mode - up to 6.2 miles - 1310 nm - for Nortel Passport 8683XLR