Features: for Optiplex 3020 7020 9020 8-pin Power Cable ATX 24 pin to 8pin Cables; One needle base is connected to the ordinary ATX power supply24P, and the other is connected to the whole system; Column H61/H81/Q77/Q87/B75/A75/Q75/Q65, etc; The mainboard 8P pin holder is used, 18AWG positive standard wire, 0.18x34 copper cores, and 1000w high-power power supply is supported. Supported Models:for Optiplex 3020 7020 9020 T1700; For the above models, the mainboard is powered by 4-pin power supply in addition to the 8-pin power supply, which is standard 4-pin CPU designed. your power supply has no CPU 4-pin or only 8-pin CPU power supply, you need to purchase another CPU 8-pin to CPU 4-pin.This adapter cable requires the definition of power supply24P, which must be ATX standard, and it must be determined before shooting whether the chassis can be installed in the standard large power supply size; Specifications: Material:Copper Length:Approx.30cm/11.81in Connector Specification:1x24 pin port and 1x8 pin port Max Power: 1000W Package Includes: 1xPower Cable note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.