Your search for "PWR-1900-DC-R" revealed the following:

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NEW Arista DCS-7050TX2-128-F 96x 10GB Copper 8x 40GB QSFP+ F-B Airflow Switch

SKU: NSN-2526
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Arista DCS-7170-64C-F 7170 Series 64x 100GB QSFP28 F-R Airflow Switch

SKU: NSN-7014
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Arista DCS-7170-32CD-F 7170 Series 32x 100 Gigabit QSFP F-R Airflow Switch

SKU: NSH-8145
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Arista HPE DCS-7260CX-64-F JH799A 64x 100GB QSFP100 2x 10GB SFP+ F-B Switch

SKU: NSN-2400
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Arista DCS-7170-64C-R 7170 Series 64x 100GB QSFP28 B-F Airflow Switch

SKU: NSN-7024
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Arista HPE DCS-7260CX-64-R JH800A 64x 100GB QSFP100 2x 10GB SFP+ B-F Switch

SKU: NSN-2353
Condition: New
Shipping: Overnight Options
Warranty: 365 days