Your search for "HPE SFP28" revealed the following:
Arista QSFP-100G-SR4 100GB BASE-SR4 850nm Short Reach MMF QSFP28 Transceiver
SKU: NSB-5273
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 84.99
• 65 in stock
Call if you need more
HPE Aruba JL677A CX 6100 Series 24x 1GB PoE+ RJ45 4x 10GB SFP+ Switch
SKU: NSB-8080
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 1,254.99
• Only 1 remaining
Call if you need more
HPE Aruba J9823A 44x 1GB RJ45 2x 10GB SFP+ 4x Expansion Module Slot Switch
SKU: NSH-5518
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 646.99
• Only 2 remaining
Call if you need more
HPE Aruba AP-635 R7J28A US Region Wi-Fi 6E 802.11ax Internal Antenna Campus WAP
SKU: NSB-7483
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 361.99
• Only 2 remaining
Call if you need more
HPE Aruba JW683A 7024 US 24x 1GB PoE+ RJ45 2x 10GB SFP+ Controller for 32x AP's
SKU: NSB-7508
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 705.99
• Only 2 remaining
Call if you need more
HPE JL437A 10GB BASE-SR LC Data Center Short Reach SFP+ Transceiver
SKU: NSB-5113
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 54.99
• Only 2 remaining
Call if you need more
HPE Aruba JL681A Instant On 1930 8x 1GB PoE RJ45 2x 1GB SFP Switch
SKU: NSB-9260
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 195.99
• Only 1 remaining
Call if you need more
NEW HPE Aruba J9151D 10GB BASE-LR LC SMF Long Reach XCVR SFP+ Transceiver
SKU: NSN-7340
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 375.99
• Only 1 remaining
Call if you need more
HPE JH007A FlexFabric 12900 Series 48x 10GB Copper Switch Module
SKU: NSB-9850
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 2,262.99
• Only 2 remaining
Call if you need more
HPE JC068A ProCurve 12500 Series 8x 10GB XFP Switch Module
SKU: NSB-1421
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 139.99
• Only 2 remaining
Call if you need more