Your search for "PWR-500AC-R" revealed the following:
NEW Arista DCS-7050SX-72Q-F 48x 10GB SFP+ 6x 40GB QSFP+ Front-to-Back Air Switch
SKU: NSN-2402
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-7280SE-68-R 48x 10GB SFP+ 2x 100GB QSFP100 B-F Airflow Switch
SKU: NSN-3814
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-7050TX-72-F 48x 10GB Copper 6x 40GB (2xMXP) F-B Airflow Switch
SKU: NSN-6525
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7050SX-72-F 48x 10GB SFP+ 2x MXP Front-to-Back Airflow Switch
SKU: NSN-2475
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7280SE-68-F 48x 10GB SFP+ 2x 100GB QSFP100 F-B Airflow Switch
SKU: NSN-1667
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7050SX2-72Q-F 48x 10GB SFP+ 6x 40GB QSFP+ F-B Airflow Switch
SKU: NSN-2393
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7050TX-48-F 32x 10GB Copper 4x 40GB QSFP+ F-B Airflow Switch
SKU: NSN-3974
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