Please use the jumper to change the 12V/5V voltage first. Otherwise, it may damage your device. It is compatible with DC12V/5V monitors, routers, switches, cameras, and disk devices. (Power supply not required) Supports ATX standard chassis with PCI-E 12cm height bracket. Features a safe and stable DC 12V/5V power control and management system, lead-free high-temperature SMT. Input: SATA-15pin or IDE-4Pin, supports DC12V and 5V power from internal chassis. Either input can be used. Output 1: DC5.5mm 12/5V output, please use the jumper to change the voltage. Output 2: DC5.5mm 12V output, can be changed. Output 3: DC 2Pin 12/5V output, please use the jumper to change the voltage. Includes one DC5.5mm 1-to-4 power cable, compatible with DC5.5x2.5mm, DC5.5x2.1mm, DC4.9x1.7mm, and DC3.5x1.3mm connectors. Due to different product batches, the appearance may vary slightly, but this does not affect functionality. Color: As shown Material: PC+Plastic Package Contents: 1 x Power Card 1 x Cable Only the above package content is included; other items are not part of this package. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.