Your search for "N5K-C5020" revealed the following:
Cisco N5K-C5020-FAN Nexus 5020 Series Switch 1x Fan Module
SKU: NSH-6170
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 29.99
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NEW Cisco N5K-C5020-FAN Nexus 5020 Series Switch 1x Fan Module
SKU: NSN-0369
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N5K-C5020P-BF 40x 10GB SFP+ 2x Expansion Module Slots Switch Chassis
SKU: NSN-3283
Condition: New
Shipping: Overnight Options
Warranty: 365 days