Your search for "juniper qsfp-40g" revealed the following:
NEW Arista AOC-Q-Q-40G-5M 5m 40GB QSFP+ Active Optical Cable
SKU: NSN-6091
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper ACX6360-OR-AC 20x 100GB QSFP28 8x 200GB CFP2- DCO F-B Air Router
SKU: NSH-8437
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX5200-48Y-AFO 48x 25GB SFP28 6x 100GB QSFP28 F-B Air Switch
SKU: NSH-8257
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX5210-64C-DC-AFO 64x 100GB QSFP28 F-B Airflow (DC) Switch
SKU: NSH-8263
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Arista AOC-Q-Q-40G-25M 25m 40GB QSFP+ Active Optical Cable
SKU: NSB-5308
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Arista AOC-Q-Q-40G-3M 3m 40 Gigabit QSFP+ Active Optical Cable
SKU: NSN-6064
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5220-32CD-AFO 32x 400GB QSFP56-DD Front-to-Back Airflow Switch
SKU: NSN-0931
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX5210-64C-AFO2 QFX5210 Series 64x 100GB QSFP28 F-B Airflow Flex Switch
SKU: NSB-3894
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW HPE JH234-61001 X242 Series 40G QFP+ to QSFP+ 1m Direct Attach Copper Cable
SKU: NSN-6231
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista CAB-Q-Q-1M 1m 40 Gigabit BASE-CR4 QSFP+ Twinax Copper Cable
SKU: NSN-7243
Condition: New
Shipping: Overnight Options
Warranty: 365 days