Your search for "hpe sfp28" revealed the following:
HPE P26264-001 Broadcom 2x 25 Gigabit SFP28 Network Adapter
SKU: NSC-0349
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW HPE Q9E63A M-Series SN2010M 18x 25GB SFP28 4x 100GB QSFP28 B-F Air Switch
SKU: NSN-0072
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW HPE Aruba JL704C 44x 25GB SFP28 6x 100GB QSFP28 F-B Airflow Switch w/ MACsec
SKU: NSN-2050
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW HPE Aruba JL624A 48x 25GB SFP28 8x 100GB QSFP28 Front-to-Back Airflow Switch
SKU: NSN-3639
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW HPE Aruba JL625A 48x 25GB SFP28 8x 100GB QSFP28 Back-to-Front Airflow Switch
SKU: NSN-3640
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW HPE Aruba JL484A 25GB BASE-SR LC MMF Optical SFP28 Transceiver
SKU: NSN-5895
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW HPE Aruba R0X44A CX 6400 Series 48x 25GB SFP28 Switch Line Card
SKU: NSN-0523
Condition: New
Shipping: Overnight Options
Warranty: 365 days
HPE Aruba JL705C 44x 25GB SFP28 6x 100GB QSFP28 B-F Air Switch w/ MACsec
SKU: NSB-9696
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
HPE Aruba JL704C 44x 25GB SFP28 6x 100GB QSFP28 F-B Airflow Switch w/ MACsec
SKU: NSB-9590
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW HPE Aruba JL486A 25GB BASE-LR LC Long Reach 1310nm SMF SFP28 Transceiver
SKU: NSN-6502
Condition: New
Shipping: Overnight Options
Warranty: 365 days