This 4-Pin Molex Power Cable provides easy access to 5V and 12V power from an AT or ATX power supply, with bare wires ready for connecting electronics and custom projects. For big projects with big power needs, an AT or ATX power supply is a handy place to grab 5V or 12VDC. The only problem is that these supplies have connectors that only plug into motherboards or hard drives. That's where this cable comes in. It has a matching 4-pin Molex connector to the hard drive/CD-ROM power cables that come out of a power supply so you can use this to grab 5V or 12V. Heck, you can even use this cable while your computer is powered, say to decorate your hard drive with LEDs or VFD/LCD displays, etc. Note that in some older drives, the 12V supply is 'unstable' unless there's a lot of current draw on the 5V line. In these cases, if you need to use the 12V line without also loading the 5V line, you can solder a 10 ohm 10 Watt power resistor between ground and 5V to load it enough to stabilize the 12V line. View our full range of Adafruit products here. Features * 4-pin Molex connector compatible with AT/ATX power supplies * Provides access to 5V and 12V DC power outputs * Enables use of power supply whilst computer is running * Suitable for powering LEDs, VFD and LCD displays * Compatible with hard drive and CD-ROM power cables * Ideal for large projects with significant power requirements * Note: Some older supplies may require 10 ohm 10 Watt load resistor on 5V line to stabilise 12V output Specifications * 30cm long cable * 18AWG stranded core * Two black ground wires, one red +5V pin, one yellow +12V pin * For use with any computer power supply! Package Contents * 1x IDE Molex 4 Pin Socket Cable - 30cm long https://elecena.pl/product/22726230/ide-molex-4-pin-socket-cable-30cm-long 2023-03-07 https://elecena.pl/product/22726230/ide-molex-4-pin-socket-cable-30cm-long 2023-12-27 https://elecena.pl/product/22726230/ide-molex-4-pin-socket-cable-30cm-long 2024-09-18 https://elecena.pl/product/22726230/ide-molex-4-pin-socket-cable-30cm-long 2024-11-29 https://elecena.pl/product/22726230/ide-molex-4-pin-socket-cable-30cm-long 2024-11-30 https://elecena.pl/product/22726230/ide-molex-4-pin-socket-cable-30cm-long 2025-04-09 https://elecena.pl/product/22726230/ide-molex-4-pin-socket-cable-30cm-long 2025-11-28 https://elecena.pl/product/22726230/ide-molex-4-pin-socket-cable-30cm-long 2025-11-29