GE 400-Watt ED37 For Indoor/Outdoor Use Metal Halide HID Light Bulb in the HID Light Bulbs department at Lowes.com
Elite Power 400W | Cooler Master
Amazon.com: Insignia - 400W ATX Power Supply : Electronics
Elite 400W V3 Active PFC ATX PSU | Cooler Master
Universal Core and Coil Ballast Kit for 400W Metal Halide Lamp 120V to 480V | M400ML5AC4M500K | Bulbs.com
400W Power Supply for BizonBOX 2S, BizonBOX 3 (replacement part) | BIZON Custom Workstation Computers. Best Workstation PCs and GPU servers for AI, deep learning, video editing, 3D rendering, CAD.