Your search for "hpe sfp28" revealed the following:
Cisco UCS-FI-6454-U UCS 6454 18x 25G SFP28 2x 100G QSFP28 Fabric Interconnect
SKU: NSB-6665
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5120-48Y-AFI 48x 25GB SFP28 8x 100GB QSFP28 B-F Airflow Switch
SKU: NSN-3626
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco UCS-FI-6454 UCS 6454 18x 25GB SFP28 2x 100GB QSFP28 Interconnect
SKU: NSN-9197
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Mellanox MSN2410-BB2RO 48x 25GB SFP28 8x 100GB QSFP28 F-B Air (C2P) ONIE Switch
SKU: NSB-6760
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N540-24Z8Q2C-M 24x 10GB SFP+ 8x 25GB SFP28 2x 100GB QSFP28 Router
SKU: NSN-9652
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Ruckus ICX7850-48F-E2 48x 25GB SFP28 8x 100GB QSFP28 Switch
SKU: NSB-6341
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Arista AOC-S-S-25G-10M 10m 25 Gigabit SFP28 Active Optical Cable
SKU: NSN-5309
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Fortinet FS-1024E FortiSwitch 24x SFP+ 2x QSFP28 Local Management Only Switch
SKU: NSB-9504
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Mellanox MSN2410-CB2F 48x 25GB SFP28 8x 100GB QSFP28 B-F (P2C) Onyx Switch
SKU: NSN-9826
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco N540-24Z8Q2C-M 24x 10GB SFP+ 8x 25GB SFP28 2x 100GB QSFP28 Router
SKU: NSB-8196
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days