Your search for "fn-tran-sfp+sr" revealed the following:

Nokia 474333A.101 40GB BASE-SR4 850nm MMF QSFP+ Transceiver

SKU: NSB-0423
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Nvidia Mellanox MC2207411-SR4L 56GB BASE-SR4L 850nm MPO QSFP Transceiver

SKU: NSN-8980
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Nvidia Mellanox MMA1B00-E100 100GB BASE-SR4 850nm MMF MPO QSFP28 Transceiver

SKU: NSB-3083
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Dell 407-BBOZ VJW01 40GB BASE-SR 850nm MPO OM3/OM4 QSFP+ Transceiver

SKU: NSN-0910
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Nvidia Mellanox MMA1B00-C100C 100GB BASE-SR4 850nm MPO CPRI QSFP28 Transceiver

SKU: NSB-3121
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

Nvidia Mellanox MC2207411-SR4L 56GB BASE-SR4L 850nm MPO QSFP Transceiver

SKU: NSB-3078
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days