Ferrite Core Noise Suppressor Filter Rings Why you need them Reduce electromagnetic and radiofrequency interference that causes static, hum, data errors, and degraded audio/video quality. Improve signal clarity for connected devices without changing cables or electronics. Key benefits Effective noise cancellation for USB, Firewire, Phone, Powerline, Coaxial, Audio, and Video cables. Durable ferrite construction for longlasting performance and repeated use. Simple clipon design — no tools, no wiring, no configuration. What they do Suppress frequency interference along cable runs to reduce signal distortion and communication errors. Work passively and continuously whenever the cable is connected. Compatibility and application Compatible with a wide range of cable types: USB, IEEE 1394/Firewire, telephone lines, powerline cords, coaxial TV/satellite cables, and audio/video leads. Commonly used with computers, external hard drives, audio equipment, copiers, fax machines, set boxes, and consumer electronics. Easy installation tips Clip the ring around the cable close to the device or connector where interference is most likely generated or received. Use one ring per cable or combine multiple rings for higher suppression when needed; reusable and repositionable as required. Practical use scenarios Home studio: Clip a ring on audio or USB cables feeding an interface to reduce hum and improve recording clarity. Office/data storage: Fit a ring on USB cables to an external hard drive to reduce communication errors in noisy power environments. Home entertainment: Attach a ring to coaxial or video cables to help reduce picture noise and improve signal stability. Materials and performance Built from ferrite material designed for EMI/RFI suppression. Passive, maintenance solution that enhances signal integrity without altering device settings. Simple, reliable, and effective — these ferrite core suppressor rings provide a lowcost way to reduce cableborne interference and improve the performance of your devices.