Your search for "HPE SFP28" revealed the following:
HPE JD093B X130 10GB BASE-LRM 1310nm MMF LC SFP+ Transceiver
SKU: NSH-4896
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 31.99
• 99 in stock
Call if you need more
Extreme 5420M-48W-4YE 48x 1GB PoE++ RJ45 4x 25GB SFP28 Switch
SKU: NSB-3004
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 3,937.99
• Only 2 remaining
Call if you need more
HPE Aruba JL724B CX 6200F Series 24x 1GB RJ-45 4x 10GB SFP+ Switch
SKU: NSB-8343
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 3,277.99
• Only 2 remaining
Call if you need more
NEW Extreme Brocade BR-SLX-9140-48V-DC-F 48x SFP28 6x QSFP28 F-B (DC) Switch
SKU: NSN-4588
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 1,469.99
• 4 in stock
Call if you need more
HPE JD089-61201 JD089B 1GB BASE-T RJ45 SFP Transceiver
SKU: NSB-3846
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 16.99
• Only 2 remaining
Call if you need more
NEW Arista CAB-Q-4S-100G-5M 5m 100GB QSFP28 to 4x 25GB SFP+ DA Breakout Cable
SKU: NSN-5716
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 212.99
• 7 in stock
Call if you need more
NEW HPE JD097B 3m 10GB SFP+ Direct Attach Copper Cable
SKU: NSN-6188
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 188.99
• 5 in stock
Call if you need more
HPE JH694A 1.2m 10GB SFP+ Direct Attach Copper Cable
SKU: NSB-4476
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 139.99
• Only 1 remaining
Call if you need more
NEW HPE JH693A 0.65m 10GB SFP+ Direct Attach Copper Cable
SKU: NSN-9065
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 249.99
• Only 2 remaining
Call if you need more
NEW Cisco N9K-C9348GC-FXP 48x 1GB RJ45 4x 25GB SFP28 2x 100GB QSFP28 F-B Switch
SKU: NSN-8189
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 612.99
• Only 1 remaining
Call if you need more