Your search for "jc751a" revealed the following:
HPE JC751A FlexNetwork 10504 Series Switch 640Gbps Type B Fabric Module
SKU: NSB-3841
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 734.99
• Only 2 remaining
Call if you need more
NEW HPE JC751A FlexNetwork 10504 Series Switch 640Gbps Type B Fabric Module
SKU: NSN-3511
Condition: New
Shipping: Overnight Options
Warranty: 365 days