How to Connect Your PSU Cables to Your Motherboard — Power Supply Cable Guide
Amazon.com: Motherboard USB 9 Pin Header Hub Male 1 to 2/4 Female USB 2.0 Splitter Extension Cable, USB 9-pin Internal Cable 9 pin Connector Adapter for Port Multiplier (35cm) : Electronics
Startech .com .com 2 Port USB Motherboard Header AdapterUSB A to USB 10 Pin Header F/F1 x IDC Female2 x Type A Female USB USBMBADAPT2 - Corporate Armor
Front Panel Connectors On Motherboard - Easy Beginners Full PC Building Tutorial - Pt 19 - YouTube
Internal Connectors
Kentek 6 Inch 6" 20 Pin Power Supply Male to 24 Pin Motherboard Female Main Connector Converter Extension M/F DC Internal Computer PC Power Cable Adapter Cord - Walmart.com