CRJ DC Power Supply Plug to Dual 3-Pin and 4-Pin PC

[Usage]: The 4-pin power connector for external PC fan is converted into a DC power connector. Connect the DC 5.5mm x 2.1mm female to the DC power

DKARDU DC to 4 Pin/3 Pin PC Fan, 5 PCS DC 5.5mm x 2.1mm Female Plug to Dual 3/4 Pin Male Connector PC Case Fan Power Converter Cable for Power Supply

NOYITO DC 12V 2A Fan Power Adapter D-Port 4Pin Connector Fan External Power Supply Input AC 100-240V

All Cables – CRJ Electronics

ARSYLID Conversion cable 4pin 3pin to 2 pin 2.5mm adapter fan for VGA cooling fan Power supply mini 2pin - AliExpress

The perfect cable for graphics card aftermarket cooling and deshroud modifications. Connect up to two 3-pin and 4-pin computer fans to a micro 4-pin

CRJ Micro 4-Pin PWM GPU Dual Fan Splitter Adapter Cable for Graphics Cards

CRJ Male Mini 4-Pin GPU Fan to Female 4-Pin PWM All Black Sleeved Adapter Cable

This adapter cable allows you to power up to three (3) standard 3-pin or 4-pin computer fans from a DC power supply. The DC input measures 5.5mm x 2.1mm which is the most common barrel plug size, ensuring compatibility with a wide range of power supplies. Most computer fans require 12V for full speed operation but lower voltages like 5V and 9V can be used to achieve quieter operation. The cable is designed to a high standard with 22 AWG wiring and injection molded components for durability.

CRJ Female DC Plug to Three 3-Pin and 4-Pin PC Fan Power Adapter Cable

Angitu Speed 12v/5v Voltage Step-up Usb To Dual 3-pin 4-pin Pc Fan Sleeved Power Adapter Cable With Switch - 60 Cm - Pc Hardware Cables & Adapters - AliExpress

Darkside USB Mini (12v) to Sleeved 3/4-Pin Fan Adapter Cable 50cm Jet Black for sale online

My motherboard doesn't support as many fans as I have, because it sucks. Can I power my extra fans without connecting to the motherboard? - Quora