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-7280SE-64-F 48x 10GB SFP+ 4x 40GB QSFP+ Front-to-Back Air Switch
SKU: NSN-2462
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
NEW Arista DCS-7020TRA-48-R 7020R Series 48x GE RJ45 6x 10G SFP+ B-F Air Switch
SKU: NSN-4117
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
NEW Arista DCS-7050SX-72-R 48x 10GB SFP+ 2x MXP Back-to-Front Airflow Switch
SKU: NSN-2476
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7060SX2-48YC6-F 48x 25GB SFP25 6x 100GB QSFP F-B Airflow Switch
SKU: NSN-3765
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-7050TX-72Q-R 48x 10GB Copper 6x 40GB QSFP+ B-F Airflow Switch
SKU: NSN-4224
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