Supplement HIFI power filter, no polarity, zero internal resistance. This product does not have strong suppression of and is positioned as a high-end supplement filter. It is suitable for connecting to the last link of the system power supply, such as behind other filters, to make the sound performance more delicate and rich. Benchmarking capacitor,Non-pole can also be connected to other equipment through the terminal, for high-end mill use. Non- capacitance: 5100uf Applicable voltage: 5-25V Maximum current: 20A The input voltage and output voltage are the same and there is no transformation. Device interface: DC2.1, DC2.5, terminal. The polarity is positive inside and negative outside Usage: Plug and play. Follow the IN direction and OUT direction, and let the electricity flow in from one side to the other. Delivery includes oxygen-free copper DC cable. Note: Installation guide not included Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Color: Black Material: Iron Package Contents: 1 x HIFI Power Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.