Your search for "EC8404009-E6" revealed the following:
Extreme EC8404009-E6 VSP 8400 Series 8402CQ 2x 100GB QSFP28 Switch Module
SKU: NSH-8563
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 4,382.99
• Only 1 remaining
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NEW Extreme EC8404009-E6 VSP 8400 Series 8402CQ 2x 100GB QSFP28 Switch Module
SKU: NSN-8263
Condition: New
Shipping: Overnight Options
Warranty: 365 days