Your search for "ws-c4500x-f" revealed the following:
Cisco WS-C4500X-F-32SFP+ 32x 10GB SFP+ Back-to-Front Airflow Switch
SKU: NSH-3498
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 244.99
• Only 2 remaining
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NEW Cisco WS-C4500X-F-16SFP+ 16x 10GB SFP+ Back-to-Front Airflow Switch
SKU: NSN-2443
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco WS-C4500X-F-32SFP+ 32x 10GB SFP+ Back-to-Front Airflow Switch
SKU: NSN-2241
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco WS-C4500X-F-16SFP+ 16x 10GB SFP+ Back-to-Front Airflow Switch
SKU: NSH-4669
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days