Your search for "220-48p-10GE4" revealed the following:

Extreme 16565 220-48p-10GE4 220 Series 48x 1GB PoE+ RJ45 4x 10GB SFP+ Switch

SKU: NSB-9100
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

$ 361.99

$ 531.99

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NEW Extreme 16565 220-48p-10GE4 48x 1GB PoE+ RJ-45 4x 10GB SFP+ Switch

SKU: NSN-0806
Condition: New
Shipping: Overnight Options
Warranty: 365 days