Your search for "PWR-500AC-F" revealed the following:
NEW Arista DCS-7160-48TC6-F 48x 10GB Copper 6x 100GB QSFP F-B Air Switch
SKU: NSN-2432
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7020TR-48-R 48x 1GB RJ45 6x 10GB SFP+ B-F Airflow Switch
SKU: NSN-3607
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7160-48YC6-R 48x 25GB SFP+ 6x 100GB QSFP Back-to-Front Air Switch
SKU: NSN-1845
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Arista DCS-7020SR-24C2-R 24x 10GB SFP+ 2x 100GB QSFP B-F Air Switch
SKU: NSH-8204
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7160-48TC6-R 48x 10GB Copper 6x 100GB QSFP B-F Airflow Switch
SKU: NSN-2456
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7050TX-64-F 48x 10GB Copper 4x 40GB QSFP+ F-B Air Switch
SKU: NSN-2504
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7280SR-48C6-M-F 48x 10GB SFP+ 6x 100GB QSFP F-B Airflow Switch
SKU: NSN-2365
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7050TX-72Q-F 48x 10GB Copper 6x 40GB QSFP+ F-B Airflow Switch
SKU: NSN-3995
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7020SR-24C2-R 24x 10GB SFP+ 2x 100GB QSFP B-F Air Switch
SKU: NSN-4912
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Arista DCS-7280TRA-48C6-R 48x 10GB RJ45 6x 100GB QSFP28 AM B-F Switch Router
SKU: NSB-5389
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days