https://www.ebay.com/sch/i.html?_nkw=Addon+Redback+Compatible+Sfp+Transceiver+Sfp+Mini+Gbic+Transceiver+Module+Gigabit+Ethernet&_sacat=0&_dmd=2

Addon Redback Compatible Sfp Transceiver - Sfp (Mini-Gbic) Transceiver Module - Gigabit Ethernet

Regular price
$310.00
Sale price
$219.00

SFP (mini-GBIC) transceiver module (equivalent to: RedBack RED-SFP-GE-CWDM1490) - Gigabit Ethernet - 1000Base-CWDM - LC single-mode - up to 24.9 miles - 1490 nm