Amazon.com: Fancasee (4-Pack) 4 Pin PWM Fan Power Supply Cable PC Internal Motherboard Fan Power Extension Cable Adapter Cord Wire for Computer ATX Case 4-Pin / 3-Pin Cooling Fans Cable (10.5 inch) : Electronics
SILENT 14 PWM BLACK - Gelid Solutions
PWM 1-TO-4 SPLITTER - Gelid Solutions
EnLabs PWMHUB10S 10 Ports 4-Pin PWM Fan Hub, SATA 15pin to 10 Fan Power Splitter Adapter Cable w/ Self-sticker for 3Pin / 4Pin fan - Newegg.com