Check the listing for details. Apple PowerMac G4 MDD ATX Power Supply Adapter Cable. Condition: New. Listed at 47.99 USD. Description This is for an adapter cable which allows you to power an Apple PowerMac G4 "Mirror Drive Doors" computer with a standard 24 pin ATX power supply. Most power supplies of 300W or more that have a 24 pin ATX motherboard connector, and a 4 or 8 pin 12v CPU power connector will work. Not recommended for use with 20 pin ATX power supplies. Power supplies with the SFX form factor are only 2.5" thick, and are the best bset for fitting inside the G4's case. Be sure to install it in a position that doesn't block the power supply's air vents and fan. Note that this adapter does not supply power for an ADC (Apple Display Connector) monitor. If you have an ADC monitor, you will need to use an external ADC to DVI powered adapter. For buyers in the US only: If you have a broken MDD power supply left over, I will accept it as a partial trade in for this cable. Contact me after you have received your cable, and I will send you a pre-paid shipping label that you can use to send in your broken power supply. I will refund $35 as soon as I receive your broken power supply. Condition It's new. In the box You will receive a power adapter cable as shown.