Your search for "hpe sfp28" revealed the following:
NEW Dell SFP28-25GbE-SR-85 FTLF8536P4BNL-E5 25GB BASE-SR 850nm SFP28 Transceiver
SKU: NSN-5185
Condition: New
Shipping: Overnight Options
Warranty: 365 days
HPE JH359A FlexFabric 12900E Series 48x 40GB QSFP+ Switch Line Card
SKU: NSB-8339
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper EX4400-EM-4Y EX4400 Series 4x 25GB SFP28 Switch Module
SKU: NSB-7760
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
HPE 487657-001 3m 10GB SFP+ Direct Attach Copper Cable
SKU: NSH-3842
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
HPE JG895A 5700-48G-4XG-2QSFP+ 48x 1GB RJ45 4x 10GB SFP+ (TAA) Switch
SKU: NSH-4845
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Amphenol SF-NDCCGF28GB-002M 2m 25GB SFP28 Direct Attach Copper Cable for Cisco
SKU: NSB-0900
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Extreme 10530 10m 25GB SFP28 Active Optical Twinax Cable
SKU: NSH-9418
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco SFP-H25G-CU4M 4m 25GB SFP28 Direct Attach Copper Cable
SKU: NSH-8892
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Dell S5296F-ON EMC S 96x 25GB SFP28 8x 100GB QSFP28 F-B Air (No OS10) Switch
SKU: NSN-9938
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW HPE JL289A 20m 40GB QSFP+ Active Optical Cable
SKU: NSN-5442
Condition: New
Shipping: Overnight Options
Warranty: 365 days