Your search for "fn-tran-sx" revealed the following:

Extreme 10051H 1GB BASE-SX 850nm MMF LC SFP Transceiver

SKU: NSB-3558
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

HPE 453153-001 453577-001 1GB BASE-SX 850nm MMF SFP Transceiver

SKU: NSB-1088
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

Sumitomo Electric SXP3101NV-F3-M 10GB SR1 LR/LW 1310nm SMF 10km SFP+ Transceiver

SKU: NSB-1748
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Extreme 10051H 1GB BASE-SX 850nm MMF LC SFP Transceiver

SKU: NSN-7132
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Arista SFP-1G-LX Optical 1 Gigabit BASE-LX Transceiver SFP

SKU: NSN-6609
Condition: New
Shipping: Overnight Options
Warranty: 365 days