Your search for "pwr-500ac-r" revealed the following:
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
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-7050SX2-128-R 96x 10GB SFP+ 8x 40GB QSFP+ B-F Airflow Switch
SKU: NSN-2438
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-7050SX2-72Q-R 48x 10GB SFP+ 6x 40GB QSFP+ B-F Airflow Switch
SKU: NSN-2394
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7050QX2-32S-R 32x 40GB QSFP+ 4x 10GB SFP+ B-F Airflow Switch
SKU: NSN-2436
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Arista DCS-7050CX3-32S-R 32x 100GB QSFP100 2x 10GB SFP+ B-F Air Switch
SKU: NSN-3614
Condition: New
Shipping: Overnight Options
Warranty: 365 days