Your search for "QW939A" revealed the following:
HPE QW939A SN3000B 150W AC Power Supply and Fan Assembly
SKU: NSB-5805
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 166.99
• 25 in stock
Call if you need more
NEW HPE QW939A SN3000B Optional Power Supply and Fan Assembly
SKU: NSN-5838
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 178.99
• 19 in stock
Call if you need more