Your search for "QSFP-40G-SR4" revealed the following:
F5 OPT-0025-00 F5-UPG-QSFP+ 40GB BASE-SR4 MPO-12/UPC MMF QSFP+ Transceiver
SKU: NSB-0850
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 37.99
• Only 1 remaining
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Arista QSFP-100G-CWDM4 100GB BASE-CWDM4 SMF QSFP28 Transceiver
SKU: NSB-5283
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 51.99
• Only 2 remaining
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NEW Cisco Meraki MS425-16-HW 16x 10GB SFP+ 2x 40GB QSFP+ Unclaimed Switch
SKU: NSN-2192
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 1,219.99
• 7 in stock
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Nvidia Mellanox MC2210411-SR4L 40GB BASE-SR4 850nm DOM MMF QSFP+ Transceiver
SKU: NSB-6813
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 91.99
• Only 2 remaining
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NEW Cisco Meraki MS355-48X-HW 32x 1G 16x mGig UPoE 4xSFP+ 2xQSFP+ UC Switch
SKU: NSN-3577
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 1,102.99
• Only 1 remaining
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Cisco Meraki MS355-48X-HW 32x 1GB 16x mGig UPoE 4xSFP+ 2xQSFP+ Unclaimed Switch
SKU: NSH-9896
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 1,311.99
• Only 2 remaining
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Cisco Meraki MS355-48X2-HW 24x mGig 24x 1G UPoE 4xSFP+ 2x QSFP+ Unclaimed Switch
SKU: NSH-9898
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 903.99
• 9 in stock
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NEW Cisco Meraki MS355-48X2-HW 24x 1G 24x mGig 4xSFP+ 2xQSFP+ Unclaimed Switch
SKU: NSN-3568
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 2,585.99
• Only 1 remaining
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Cisco Meraki MS355-24X-HW 16x 1GB 8x mGig UPoE 4x SFP+ 2x QSFP+ Unclaimed Switch
SKU: NSH-9879
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 1,116.99
• Only 2 remaining
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Cisco N9K-C92304QC 56x 40GB QSFP+ 8x 100GB QSFP28 Front-to-Back Airflow Switch
SKU: NSB-6907
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 2,082.99
• Only 2 remaining
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