Your search for "hpe sfp28" revealed the following:
HPE JH183A FlexFabric 5930 8x 40GB QSFP+ Switch Module
SKU: NSB-9728
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 48.99
• Only 2 remaining
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HPE Aruba J4859D 1GB BASE-LX LC SMF Optical SFP Transceiver
SKU: NSB-5116
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 105.99
• Only 2 remaining
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Dell S5148F-ON-RA 210-ANCL 48x 25GB SFP28 6x 100GB QSFP28 B-F Air OS10 Switch
SKU: NSB-9771
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 1,879.99
• Only 1 remaining
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Dell S5048F-ON 48x 25GB SFP28 6x 100GB QSFP28 Front-to-Back Airflow Switch
SKU: NSH-9619
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 521.99
• Only 2 remaining
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Juniper JNP-SFP-25G-DAC-3M 3m 25GB SFP28 Direct Attach Copper Cable
SKU: NSB-5058
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 77.99
• 21 in stock
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NEW Cisco N9K-C93180YC-FX3 48x 25GB SFP28 6x 100GB QSFP28 F-B Air Switch
SKU: NSN-0606
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 7,129.99
• Only 2 remaining
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Cisco N3K-C3264C-E 64x 100GB QSFP28 2x 1GB SFP Back-to-Front Airflow Switch
SKU: NSH-8363
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 969.99
• Only 2 remaining
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Cisco N9K-C93360YC-FX2 96x 25GB SFP28 12x 100GB QSFP28 F-B Airflow Switch
SKU: NSB-7788
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 3,584.99
• Only 1 remaining
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Dell S5148F-ON 210-ANCK 48x 25GB SFP28 6x 100GB QSFP28 F-B Air OS10 Switch
SKU: NSH-9620
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 1,476.99
• Only 2 remaining
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nVidia Mellanox MCX4111A-ACAT 1x 25 Gigabit SFP28 PCIe3.0 x8 NIC
SKU: NSB-8598
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 56.99
• 47 in stock
Call if you need more