Your search for "qsfp28" revealed the following:
HPE Aruba JL711A CX 8360 Series 8360-24XF2C Back-to-Front Airflow Switch Bundle
SKU: NSB-8110
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 9,562.99
• Only 2 remaining
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HPE JL717C Aruba CX 8360 v2 Series 8360-32Y4C Switch Base Unit
SKU: NSB-8828
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 5,962.99
• Only 2 remaining
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Juniper JNP-25G-DAC-1M 1m 25GB SFP28 Direct Attach Copper Cable
SKU: NSH-9324
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 166.99
• 49 in stock
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Cisco N9K-C9508-FM-E Nexus 9500 8x Slot 800 Gbps Cloud Scale Fabric Module
SKU: NSB-7699
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 184.99
• Only 2 remaining
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Cisco N9K-C9300-FAN3 Nexus 9300 Front-to-Back (Port-Side Intake) Fan Module
SKU: NSH-6019
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 56.99
• Only 2 remaining
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Cisco N9K-C9300-FAN3-B Nexus 9300 Back-to-Front (Port-Side Exhaust) Fan Module
SKU: NSB-7712
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 39.99
• Only 2 remaining
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NEW Arista QSFP-100G-ERL4 100GBASE-ERL4 30-40km SMF Transceiver QSFP28
SKU: NSN-5288
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista QSFP-100G-LR4 100GB BASE-LR4 1310nm SMF LC QSFP28 Transceiver
SKU: NSN-5317
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista QSFP-100G-XSR4 100GBASE-XSR4 150m Parallel OM3/300m OM4 MMF QSFP28
SKU: NSN-6739
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista QSFP-100G-FR 100GB BASE-FR up to 2km over duplex SMF QSFP28
SKU: NSN-6740
Condition: New
Shipping: Overnight Options
Warranty: 365 days