Your search for "juniper qsfp-40g" revealed the following:
NEW Arista CAB-Q-Q-0.5M 0.5m 40GB QSFP+ Direct Attach Copper Cable
SKU: NSN-7312
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Extreme 48051 ExtremeSwitching X8 BDXA-40G24X 24x 40G QSFP+ Switch Module
SKU: NSN-3829
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Fiberstore QSFP-40G-DAC-0.5M 0.5m 40GB QSFP+ Direct Attach Copper Cable
SKU: NSB-1270
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW HPE 720196-B21 1m 40GB QSFP+ Direct Attach Copper Cable
SKU: NSN-6249
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista AOC-Q-Q-40G-10M 10m 40GB QSFP+ Active Optical Cable
SKU: NSN-5639
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper ACX6160-T-DC 8x 100GB QSFP28 4x 200GB CFP2- DCO F-B Air (DC) Router
SKU: NSB-5313
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Ruckus 40G-QSFP-C-00501 0.5m 40GB QSFP+ Direct Attach Copper Cable
SKU: NSB-1479
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N9K-X9636PQ 36x 40GB QSFP+ Switch Line Card
SKU: NSN-7503
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista CAB-Q-Q-2M 2m 40GB QSFP+ Direct Attach Copper Cable
SKU: NSN-7206
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Arista AOC-Q-Q-40G-10M 10m 40GB QSFP+ Active Optical Cable
SKU: NSB-5305
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days