Your search for "finisar fclf" revealed the following:
NEW Cisco N9K-X9636PQ 36x 40GB QSFP+ Switch Line Card
SKU: NSN-7503
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco N7K-F306CK-25 Nexus 7000 6x 100GB CPAK Switch Line Card
SKU: NSH-7579
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX10000-30C-M QFX 10000 Series 30x 100GB QSFP28 MACsec Switch Line Card
SKU: NSH-9971
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco A9K-2X100GE-TR 2x 100GB CFP (Transport Optimized) Router Line Card
SKU: NSH-3896
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX10000-60S-6Q 60x 10G SFP+ 6x 40GB QSFP+ 2x 100GB Switch Line Card
SKU: NSN-3733
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco N7K-M132XP-12L Nexus 7000 Series 32x 10GB SFP+ Switch Module
SKU: NSH-2917
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N9K-X9564PX 48x 10GB SFP+ 4x 40GB QSFP+ Switch Line Card
SKU: NSN-2121
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX10000-36Q QFX 10000 Series 36x 40GB QSFP+ Switch Line Card
SKU: NSN-3791
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7500R2-36CQ-LC 7500R Series 36x 100GB QSFP100 Switch Line Card
SKU: NSN-3608
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N9K-X9736PQ Nexus 9000 36x 40GB QSFP+ Switch Line Card
SKU: NSN-8792
Condition: New
Shipping: Overnight Options
Warranty: 365 days