Your search for "hpe sfp28" revealed the following:
Dell S5224F-ON 24x 25GB SFP28 4x 100GB QSFP28 Front-to-Back Air No OS10 Switch
SKU: NSB-9766
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Arista CAB-S-S-25G-3M 3m 25GB SFP28 Direct Attach Copper Cable
SKU: NSB-5320
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco C9600-LC-48YL C9600 48x 25 25GB SFP28 Switch Line Card
SKU: NSN-3920
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Fiberstore Q-4S2802 2m 100GB QSFP28 to 4x 25GB SFP28 DAC Breakout Cable
SKU: NSB-9823
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Arista CAB-Q-4S-100G-1M 1m 100GB QSFP to 4x 25GB SFP28 DA Breakout Cable
SKU: NSB-5253
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Extreme VSP7400-48Y-8C 48x 25GB SFP28 8x 100GB QSFP28 No Fans No PSU Switch
SKU: NSH-8529
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Arista CAB-Q-4S-100G-3M 3m 100GB QSFP to 4x 25GB SFP28 DA Breakout Cable
SKU: NSB-5255
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Dell S5212F-ON-RA 12x 25GB SFP28 3x 100GB QSFP28 B-F Air OS10 Switch
SKU: NSN-8133
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Dell S5224F-ON 24x 25GB SFP28 4x 100GB QSFP28 Front-to-Back Air OS10 Switch
SKU: NSH-9621
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Arista AOC-S-S-25G-10M 10m 25GB SFP28 Active Optical Cable
SKU: NSB-5325
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days