Your search for "DS-X9704" revealed the following:
NEW Cisco DS-X9704 MDS 9700 Series 4x 10GB Fibre Channel X2 Switch Module
SKU: NSN-7536
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco DS-X9704 MDS 9700 Series 4x 10 Gigabit Fibre Channel X2 Switch Module
SKU: NSH-9277
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days