Redundant PSU's in a standard PC case? FSP has that at CES 2020
Twins | PSU | FspLifeStyle
FSP Twins Pro ATX PS2 1+1 Dual Module 700W Efficiency Greater than 90% Hot-swappable Redundant Digital Power Supply with Guardian Monitor Software (Twins Pro 700) - Newegg.com
Dual PSU 24Pin Adapter Cable
Amazon.com: Dual PSU Cable Adapter, Dual Power Supply Extension Cable Splitter Synchronizer 24 pin to 24(20+4) pin Male to Female for Computer ATX Motherboard 18AWG/1FT : Electronics
Dual PSU Setup : r/3Dprinting
24Pin Dual PSU ATX Synchronous power supply adapter cable for Ether Mining 30cm
FSP Introduces 700W PS2 Redundant Power Supply with 80 Plus Gold Efficiency Achieves Highest Power Density of Any PS2 Redundant Power Supply | FSP TECHNOLOGY INC.
O11D MINI Dual PSU Bracket Kit - LIAN LI is a Leading Provider of PC Cases | Computer Cases
FSP Announces Twins: 500W and 700W ATX PSU with Redundancy Capability
PP10
O11D MINI Dual PSU Bracket Kit - LIAN LI is a Leading Provider of PC Cases | Computer Cases