Your search for "PWR-500AC-F" revealed the following:
NEW Arista PWR-500AC-R 500W AC B-F PSU for 7280E, 7280R, 7060X, 7050, 7020R,7160
SKU: NSN-4908
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7160-32CQ-F 32x 100GB QSFP100 Front-to-Back Airflow Switch
SKU: NSN-2384
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7050TX-72-F 48x 10GB Copper 6x 40GB (2xMXP) F-B Airflow Switch
SKU: NSN-6525
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Arista DCS-7020SR-24C2-F 24x 10GB SFP+ 2x 100GB QSFP F-B Air Switch
SKU: NSH-8203
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7050SX-96-F 48x 10GB SFP+ 4x MXP Front-to-Back Airflow Switch
SKU: NSN-2519
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7280SR-48C6-R 48x 10GB SFP+ 6x 100GB QSFP B-F Airflow Switch
SKU: NSN-1838
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7280SE-72-R 48x 10GB SFP+ 2x 100GB MXP Back-to-Front Air Switch
SKU: NSN-2449
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7280SRA-48C6-R 48x 10G SFP+ 6x 100G QSFP B-F Air Switch
SKU: NSN-4308
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7020SR-24C2-F 24x 10GB SFP+ 2x 100GB QSFP F-B Airflow Switch
SKU: NSN-4911
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7280SRA-48C6-F 7280R 48x 10G SFP+ 6x 100G QSFP F-B Air Switch
SKU: NSN-4309
Condition: New
Shipping: Overnight Options
Warranty: 365 days