Your search for "HPE SFP28" revealed the following:
NEW HPE JL251A 40GB BASE-BiDi MMF LC QSFP+ Transceiver
SKU: NSN-5946
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 204.99
• 11 in stock
Call if you need more
NEW HPE J9588A 3800-48G-PoE+-4XG 48x 1GB PoE+ RJ45 4x 10GB Copper Switch
SKU: NSN-2123
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 857.99
• Only 2 remaining
Call if you need more
Mellanox MSN2410-CB2FO 48x 25GB SFP28 8x 100GB QSFP28 B-F Air (P2C) ONIE Switch
SKU: NSB-6752
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 1,704.99
• Only 1 remaining
Call if you need more
HPE JD096C 1.2m 10GB SFP+ Passive Direct Attach Copper Cable
SKU: NSH-7608
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 23.99
• 18 in stock
Call if you need more
HPE Aruba J9283D 3m 10GB SFP+ Direct Attach Copper Cable
SKU: NSH-9648
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 67.99
• 7 in stock
Call if you need more
NEW Mellanox MCP2M00-A001 1m 25GB SFP28 Direct Attach Copper Cable
SKU: NSN-8818
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 51.99
• Only 2 remaining
Call if you need more
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
Call if you need more
HPE Aruba JL355A 2540 Series 48x 1GB RJ45 4x 10GB SFP+ Switch
SKU: NSH-8286
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 361.99
• Only 2 remaining
Call if you need more
NEW Arista SFP-25G-LR 25GB BASE-SR 850nm SMF 10km SFP28 Optical Transceiver
SKU: NSN-6401
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 142.99
• Only 1 remaining
Call if you need more
HPE J9301A 3m 10GB XFP to 10GB SFP+ Direct Attach Copper Cable
SKU: NSB-5095
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 179.99
• Only 2 remaining
Call if you need more