Your search for "pwr-500-dc-r" revealed the following:

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-7280SE-64-R 48x 10GB SFP+ 4x 40GB QSFP+ Back-to-Front Air Switch

SKU: NSN-0084
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-7124SX-F 7100 Series 24x 10GB SFP+ Front-to-Back Airflow Switch

SKU: NSN-3288
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Arista DCS-7050QX2-32S-F 32x 40GB QSFP+ 4x 10GB SFP+ F-B Airflow Switch

SKU: NSN-2435
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Arista DCS-7280SR3K-48YC8-F 48x 25GB SFP28 8x 100GB QSFP28 F-B Air Switch Router

SKU: NSB-9427
Condition: Seller refurbished
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-72-R 48x 10GB Copper 6x 40GB (2x MXP) B-F Airflow Switch

SKU: NSN-6526
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Arista DCS-7060CX-32S-F HPE JH576A 32x 100GB QSFP 2x 10GB SFP+ F-B Switch

SKU: NSN-2424
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