Your search for "EC1404003-E6" revealed the following:
NEW Extreme EC1404003-E6 VSP 9048GT 48x 1GB RJ45 Switch Line Card
SKU: NSN-9194
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 254.99
• Only 2 remaining
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Extreme EC1404003-E6 VSP 9048GT 48x 1GB RJ45 Switch Line Card
SKU: NSB-6645
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 244.99
• Only 1 remaining
Call if you need more