1000BASE-SX SFP 850nm 550m DOM Transceiver Module - Cisco
Cisco Gigabit Ethernet GBIC/SFP Modules - Cisco
SFP Single Fiber 1 km transceiver | Cisco Compatible 1G BX Ethernet
Amazon.com: Gigabit Single Mode SFP Transceiver for Cisco GLC-LH-SMD, 1000Base-LX/LH Mini GBIC, 1.25G SFP LC Fiber Module, 1310nm SMF, up to 20km, for Cisco, Meraki, Ubiquiti UF-SM-1G, TP-Link TL-SM311LS and More :