Your search for "pwr-500-dc-r" revealed the following:
Arista DCS-7060CX-32S-F HPE JH576A 32x 100GB QSFP28 2x 10GB SFP+ F-B Air Switch
SKU: NSH-7470
Condition: Seller refurbished
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
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-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-7050SX-72Q-R 48x 10GB SFP+ 6x 40GB QSFP+ Back-to-Front Air Switch
SKU: NSN-4910
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Arista DCS-7050TX-72-R 48x 10GB Copper 6x 40GB (2x MXP) B-to-F Airflow Switch
SKU: NSH-7465
Condition: Seller refurbished
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
Arista DCS-7280TRA-48C6-F 48x 10G RJ45 6x 100G QSFP AlgoMatch F-R Switch Router
SKU: NSB-5388
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7280TR-48C6-R 48x 10GB Copper 6x 100GB QSFP28 B-F Airflow Switch
SKU: NSN-3567
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7050QX-32S-R 32x 40GB QSFP+ 4x 10GB SFP+ Back-to-Front Air Switch
SKU: NSN-1736
Condition: New
Shipping: Overnight Options
Warranty: 365 days