Your search for "HPE SFP28" revealed the following:
HPE 729639-001 Smart Array 4GB FBWC Controller Memory
SKU: NSB-6147
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 244.99
• 6 in stock
Call if you need more
HPE Aruba AP-655 R7J39A US Wi-Fi 6E 802.11ax Internal Antenna Campus WAP
SKU: NSB-2367
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 294.99
• 33 in stock
Call if you need more
HPE AJ835A 2m LC to LC Multi-Mode OM3 Fiber Optic Cable
SKU: NSH-7314
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 22.99
• Only 2 remaining
Call if you need more
HPE JH449A FlexNetwork MSR4000 Series 1x Clear Channel T3 Router Module
SKU: NSB-8381
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 69.99
• Only 2 remaining
Call if you need more
HPE Aruba JL088A 3810 Series Switch Fan Tray w/ 3x Fans
SKU: NSH-9532
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 72.99
• 14 in stock
Call if you need more
NEW HPE Aruba J9733A 2920 Series 2x Port Switch Stacking Module
SKU: NSN-1560
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 494.99
• Only 2 remaining
Call if you need more
NEW HPE Aruba J9736A 3m Switch Stacking Cable for 2920 and 2930M Series
SKU: NSN-6170
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 236.99
• Only 2 remaining
Call if you need more
HPE Aruba JL086A CX 6300 Series 680W AC Switch Power Supply
SKU: NSB-6926
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 142.99
• Only 1 remaining
Call if you need more
HPE 639852-001 Virtual Connect Flex-10/10D Server Module
SKU: NSB-1240
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 39.99
• Only 2 remaining
Call if you need more
HPE SP-HDD-3TB 3TB 7.2K 3.5 Inch SAS W/ Tray CS460 CS500 ES1-H65
SKU: NSC-0019
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 179.99
• 9 in stock
Call if you need more