FSP Group 300W ATX Power Supply 1U Size for Rack Mount Case Power Supply 80 Plus (FSP300-701UH) : Amazon.ca: Electronics
250w Atx Power Supply 250w Mini Itx Power Supply Small 1u Power Supply Applicable Htpc Advertising Queuing Machine One Machine - Pc Power Supplies - AliExpress
1U Type Power Supply - PS300-1U
1U power supply range
Athena Power Zippy M1K2-5A00V4H 1000W 1U Redundant IPC/Server Power Supply - Newegg.com