Your search for "ex9251-8x4c" revealed the following:

NEW Juniper EX9251-8X4C EX9250 Series 8x 10GB SFP+ 4x 100GB QSFP28 Switch

SKU: NSN-3533
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Juniper EX9251-8X4C EX9250 Series 8x 10GB SFP+ 4x 100GB QSFP28 Switch

SKU: NSH-9325
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days