Your search for "5420F-24P" revealed the following:

Extreme 5420F-24P-4XE 5420 Series 24x 1GB PoE RJ45 4x 10GB SFP+ Switch

SKU: NSB-2440
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

$ 1,914.99

$ 1,972.99

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NEW Extreme 5420F-24P-4XE 5420 Series 24x 1GB PoE RJ45 4x 10GB SFP+ Switch

SKU: NSN-8532
Condition: New
Shipping: Overnight Options
Warranty: 365 days