Your search for "PWR-4450" revealed the following:
NEW Cisco PWR-4450-DC ISR 4000 Series 437W DC Router Power Supply
SKU: NSN-6581
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 612.99
• 4 in stock
Call if you need more
Cisco PWR-4450-DC ISR 4000 Series 437W DC Router Power Supply
SKU: NSH-8867
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 587.99
• 4 in stock
Call if you need more
Cisco PWR-4450-AC ISR 4000 Series 450W AC Router Power Supply
SKU: NSH-2976
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 33.99
• Only 2 remaining
Call if you need more
NEW Cisco ISR4351-SEC/K9 Integrated Services 4351 Security Router
SKU: NSN-1664
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 406.99
• Only 1 remaining
Call if you need more
Cisco PWR-4450-POE-AC ISR 4000 1000W AC Power Supply w/ PoE Module
SKU: NSH-6529
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco PWR-4450-AC-2 ISR 4451-X 450W AC Router Power Supply
SKU: NSH-8031
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco ISR4351-SEC/K9 Integrated Services 4351 Security Router
SKU: NSH-7972
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days