Your search for "16505" revealed the following:

Extreme 16505 X440-48T 48x 1GB RJ-45 4x 1GB SFP 2x SummitStack Switch

SKU: NSH-5903
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

$ 149.99

$ 154.99

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NEW Extreme 16505 X440-48T 48x 1GB RJ45 4x 1GB SFP 2x SummitStack Switch

SKU: NSN-3128
Condition: New
Shipping: Overnight Options
Warranty: 365 days