Amazon.com: SilverStone Technology Dual 24pin Power Supply Adapter for use of Two PSU at Once in Cryptocoin Mining PP10 : Electronics
PPCS 24-Pin Power Cable for Dual Power Supply Use PPCS-ATX24-DUAL
CORN 2-PACK Add2PSU Multiple Power Supply Adapter (ATX 24Pin to Molex 4Pin) and Daisy Chain Connector-Ethereum Mining ETH Rig Dual power supply Connector - Newegg.com
Dual Power Supply 24-Pin Adapter Cable
Lian Li 24 Pin Dual Power Supply Adapter Cable | eBay