Sfp

Intel X520 DA2 10 Gigabit 10GBe SFP Dual Port Ethernet Server Network Adapter
US $105.00
6COM Generic Compatible 1000BASE EX SFP 1310nm 40km DOM Transceiver
US $29.99
2pcs SFP Transeiver 1.25Gb/s 1310nm 20km LC DDM
US $20.00
Fiberxon FTM 3127C SL2iG 1310NM 1G 2.5G SFP
US $23.98
ERICSSON SPL 35 MR IR1 TDA EN single mode SFP
US $23.40
1.25G SFP 1310nm 40KM LC connector Dual Fiber Compact Transceiver
US $25.00