Your search for "C3KX-PWR-350WAC" revealed the following:

Cisco C3KX-PWR-350WAC Catalyst 3750X Series 350W AC Switch Power Supply

SKU: NSH-1394
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

$ 29.99

$ 37.99

• Only 2 remaining
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NEW Cisco C3KX-PWR-350WAC Catalyst 3750X Series 350W AC Switch Power Supply

SKU: NSN-4371
Condition: New
Shipping: Overnight Options
Warranty: 365 days

$ 139.99

$ 148.99

• Only 1 remaining
Call if you need more