Your search for "hpe sfp28" revealed the following:

Mellanox MMA2L20-AR 25GB BASE-LR 1310nm Duplex LC SMF 10km SFP28 Transceiver

SKU: NSB-3100
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Extreme 10530 10m 25GB SFP28 Active Optical Copper Cable

SKU: NSN-4005
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Dell S5248F-ON 48x 25GB SFP28 2x 200GB QSFP28-DD 4x 100GB QSFP28 F-B OS10 Switch

SKU: NSH-9215
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Dell S5148F-ON-RA 210-ANCL 48x 25GB SFP28 6x 100GB QSFP28 B-F OS10 Switch

SKU: NSN-9953
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Dell S5212F-ON EMC S 12x 25GB SFP28 3x 100GB QSFP28 F-B Air No OS10 Switch

SKU: NSN-9950
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Arista CAB-Q-4S-100G-3M 3m 100GB QSFP to 4x 25GB SFP28 DA Breakout Cable

SKU: NSN-6232
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Extreme VSP4900-48P 48x 1GB PoE 4x 10GB SFP+ 2x 25GB SFP28 1x 40GB QSFP+ Switch

SKU: NSB-4649
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

Arista DCS-7060CX-32S-F HPE JH576A 32x 100GB QSFP28 2x 10GB SFP+ F-B Air Switch

SKU: NSH-7470
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Extreme Brocade BR-SLX-9140-48V-AC-R 48x 25 SFP28 6x QSFP28 B-F Air Switch

SKU: NSN-4589
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Dell S5248F-ON 48x 25GB SFP28 2x QSFP28-DD 4x QSFP28 F-B No OS10 Switch

SKU: NSN-9940
Condition: New
Shipping: Overnight Options
Warranty: 365 days