HP 480720-001 - 475W 80 Plus Bronze Power Supply for XW4600 Z400 Workstation Sale $89.00 Retail $129.00
HP 468930-001 - 475W 80 Plus Bronze Power Supply for XW4600 Z400 Workstation Sale $89.00 Retail $129.00
HP DPS-475CB-1 A - 475W 80 Plus Bronze Power Supply for XW4600 Z400 Workstation Sale $89.00 Retail $129.00