Features: Quality materials and workmanship: aluminum alloyCNC shell, good conductivity, high fire rating, antiaging, easy plugging Thickened and thick copperfoil ensures stable operation of highpower graphics cards, beautiful appearance, and equipped with casing protections Output up to 600W: This adapter supports RTX4090, withmaximum output of 600W, effective heat dissipation, and stable current transmission. Long term use of power output exceeding 600W may cause equipment damage. Pay attention to maintaining a good ventilation environment inside the chassis 180 U turn design: Connect the power cord and GPU interfaces, without causing pressure on the GPU graphics card interfaces, ensuring long-term stable use. This design will reduce the pressure on connectors and cables, making them safer during assembly and long-term use, effectively avoiding cable layout difficulties caused by the graphics card bracket, and beautifying the power wiring of the graphics card. The graphics card power interfaces has four small pins facing upwards, select option A. The graphics card power interfaces has four small pins facing downwards, select the B model. Specifications: Item:ATX3.0 12VHPWR 600W 16P to 16P 180 degree Adapter Size:approx 35x22.5mm/1.38x0.89in Material: Aluminum Alloy Color: Black/White Type: A/B ( four small pins facing upwards, select option A/ four small pins facing downwards, select the B) Color:Black/Silver Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1pc x ATX3.0 12VHPWR 600W 16P to 16P 180 degree Adapter